NP Core Implementation Guide
1.0.0 - Release
NP Core Implementation Guide
1.0.0 - Release
NP Core Implementation Guide - Local Development build (v1.0.0) built by the FHIR (HL7® FHIR® Standard) Build Tools. See the Directory of published versions
| Active as of 2026-10-14 |
XML representation of the np-core-bikram-sambat-date extension.
<StructureDefinition xmlns="http://hl7.org/fhir">
<id value="np-core-bikram-sambat-date"/>
<language value="en"/>
<text>
<status value="extensions"/>
<div xmlns="http://www.w3.org/1999/xhtml"><p class="res-header-id"><b>Generated Narrative: StructureDefinition np-core-bikram-sambat-date</b></p><a name="np-core-bikram-sambat-date"> </a><a name="hcnp-core-bikram-sambat-date"> </a><table border="0" cellpadding="0" cellspacing="0" style="border: 0px #F0F0F0 solid; font-size: 11px; font-family: verdana; vertical-align: top;"><tr style="border: 1px #F0F0F0 solid; font-size: 11px; font-family: verdana; vertical-align: top"><th scope="col" style="vertical-align: top; text-align : var(--ig-left,left); background-color: white; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px; padding-top: 3px; padding-bottom: 3px" class="hierarchy"><a href="https://build.fhir.org/ig/FHIR/ig-guidance/readingIgs.html#table-views" title="The logical name of the element">Name</a></th><th scope="col" style="vertical-align: top; text-align : var(--ig-left,left); background-color: white; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px; padding-top: 3px; padding-bottom: 3px" class="hierarchy"><a href="https://build.fhir.org/ig/FHIR/ig-guidance/readingIgs.html#table-views" title="Information about the use of the element">Flags</a></th><th scope="col" style="vertical-align: top; text-align : var(--ig-left,left); background-color: white; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px; padding-top: 3px; padding-bottom: 3px" class="hierarchy"><a href="https://build.fhir.org/ig/FHIR/ig-guidance/readingIgs.html#table-views" title="Minimum and Maximum # of times the element can appear in the instance">Card.</a></th><th scope="col" style="vertical-align: top; text-align : var(--ig-left,left); background-color: white; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px; padding-top: 3px; padding-bottom: 3px; width: 100px" class="hierarchy"><a href="https://build.fhir.org/ig/FHIR/ig-guidance/readingIgs.html#table-views" title="Reference to the type of the element">Type</a></th><th scope="col" style="vertical-align: top; text-align : var(--ig-left,left); background-color: white; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px; padding-top: 3px; padding-bottom: 3px" class="hierarchy"><a href="https://build.fhir.org/ig/FHIR/ig-guidance/readingIgs.html#table-views" title="Additional information about the element">Description & Constraints</a><span style="float: right"><a href="https://build.fhir.org/ig/FHIR/ig-guidance/readingIgs.html#table-views" title="Legend for this format"><img src="data:image/png;base64,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" alt="doco" style="background-color: inherit"/></a></span></th></tr><tr style="border: 0px #F0F0F0 solid; padding:0px; vertical-align: top; background-color: white"><td style="vertical-align: top; text-align : var(--ig-left,left); background-color: white; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px; white-space: nowrap; background-image: url(tbl_bck1.png)" class="hierarchy"><img src="tbl_spacer.png" alt="" style="background-color: inherit" class="hierarchy"/><img src="icon_element.gif" alt="" style="background-color: white; background-color: inherit" title="Element" class="hierarchy"/> <a href="StructureDefinition-np-core-bikram-sambat-date-definitions.html#Extension" title="Carries the original Bikram Sambat (BS) date captured by the source system, as a numeric string in YYYY, YYYY-MM or YYYY-MM-DD form. It may be used on any date or dateTime element; it is deliberately not available on instant, which records a machine timestamp rather than a calendar date a person entered. The Gregorian (AD) element this extension is attached to remains the value of record; this extension only preserves the original BS capture for display and audit. FHIR cannot validate agreement between the two calendars, so keeping the BS value consistent with the Gregorian value is the responsibility of the capturing system. Populate this extension only where a faithful Bikram Sambat capture exists; never derive it and never use it in place of the Gregorian value. The precision of the BS value SHOULD match the precision of the Gregorian element, since a year-only birth year is a common and legitimate capture for elderly patients. There is deliberately no separate Bikram Sambat dateTime form: Bikram Sambat is a calendar with no time component, so on elements that carry a dateTime this extension records only the BS calendar date and the time of day lives solely in the Gregorian value. Where the Gregorian value carries a time, the BS date SHALL correspond to the Asia/Kathmandu local date of that instant rather than its UTC date, because the two can fall on different days across midnight.">Extension</a><a name="Extension"> </a></td><td style="vertical-align: top; text-align : var(--ig-left,left); background-color: white; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px" class="hierarchy"/><td style="vertical-align: top; text-align : var(--ig-left,left); background-color: white; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px" class="hierarchy"><span style="opacity: 0.50">0</span><span style="opacity: 0.50">..</span><span style="opacity: 0.50">*</span></td><td style="vertical-align: top; text-align : var(--ig-left,left); background-color: white; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px" class="hierarchy"><a href="http://hl7.org/fhir/R4/extensibility.html#Extension">Extension</a></td><td style="vertical-align: top; text-align : var(--ig-left,left); background-color: white; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px" class="hierarchy">Bikram Sambat Date</td></tr>
<tr style="border: 0px #F0F0F0 solid; padding:0px; vertical-align: top; background-color: #F7F7F7"><td style="vertical-align: top; text-align : var(--ig-left,left); background-color: #F7F7F7; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px; white-space: nowrap; background-image: url(tbl_bck10.png)" class="hierarchy"><img src="tbl_spacer.png" alt="" style="background-color: inherit" class="hierarchy"/><img src="tbl_vjoin.png" alt="" style="background-color: inherit" class="hierarchy"/><img src="icon_extension_simple.png" alt="" style="background-color: #F7F7F7; background-color: inherit" title="Simple Extension" class="hierarchy"/> <span style="position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0, 0, 0, 0); white-space: nowrap; border: 0" class="sr-only">Extension.</span><a style="text-decoration:line-through; text-decoration:line-through" href="StructureDefinition-np-core-bikram-sambat-date-definitions.html#Extension.extension">extension</a><a name="Extension.extension"> </a></td><td style="vertical-align: top; text-align : var(--ig-left,left); background-color: #F7F7F7; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px" class="hierarchy"/><td style="vertical-align: top; text-align : var(--ig-left,left); background-color: #F7F7F7; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px" class="hierarchy"><span style="text-decoration:line-through"/><span style="text-decoration:line-through">0</span><span style="text-decoration:line-through">..</span><span style="text-decoration:line-through">0</span></td><td style="vertical-align: top; text-align : var(--ig-left,left); background-color: #F7F7F7; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px" class="hierarchy"/><td style="vertical-align: top; text-align : var(--ig-left,left); background-color: #F7F7F7; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px" class="hierarchy"><span style="font-style: italic">Extension</span></td></tr>
<tr style="border: 0px #F0F0F0 solid; padding:0px; vertical-align: top; background-color: white"><td style="vertical-align: top; text-align : var(--ig-left,left); background-color: white; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px; white-space: nowrap; background-image: url(tbl_bck10.png)" class="hierarchy"><img src="tbl_spacer.png" alt="" style="background-color: inherit" class="hierarchy"/><img src="tbl_vjoin.png" alt="" style="background-color: inherit" class="hierarchy"/><img src="icon_element.gif" alt="" style="background-color: white; background-color: inherit" title="Element" class="hierarchy"/> <span style="position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0, 0, 0, 0); white-space: nowrap; border: 0" class="sr-only">Extension.</span><a href="StructureDefinition-np-core-bikram-sambat-date-definitions.html#Extension.url">url</a><a name="Extension.url"> </a></td><td style="vertical-align: top; text-align : var(--ig-left,left); background-color: white; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px" class="hierarchy"/><td style="vertical-align: top; text-align : var(--ig-left,left); background-color: white; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px" class="hierarchy"><span style="opacity: 0.50">1</span><span style="opacity: 0.50">..</span><span style="opacity: 0.50">1</span></td><td style="vertical-align: top; text-align : var(--ig-left,left); background-color: white; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px" class="hierarchy"><a style="opacity: 0.50; opacity: 0.50" href="http://hl7.org/fhir/R4/datatypes.html#uri">uri</a></td><td style="vertical-align: top; text-align : var(--ig-left,left); background-color: white; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px" class="hierarchy"><span style="color: darkgreen">"http://fhir.digitalhealth.gov.np/core/StructureDefinition/np-core-bikram-sambat-date"</span></td></tr>
<tr style="border: 0px #F0F0F0 solid; padding:0px; vertical-align: top; background-color: #F7F7F7"><td style="vertical-align: top; text-align : var(--ig-left,left); background-color: #F7F7F7; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px; white-space: nowrap; background-image: url(tbl_bck00.png)" class="hierarchy"><img src="tbl_spacer.png" alt="" style="background-color: inherit" class="hierarchy"/><img src="tbl_vjoin_end.png" alt="" style="background-color: inherit" class="hierarchy"/><img src="icon_primitive.png" alt="" style="background-color: #F7F7F7; background-color: inherit" title="Primitive Data Type" class="hierarchy"/> <span style="position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0, 0, 0, 0); white-space: nowrap; border: 0" class="sr-only">Extension.</span><a href="StructureDefinition-np-core-bikram-sambat-date-definitions.html#Extension.value[x]">value[x]</a><a name="Extension.value_x_"> </a></td><td style="vertical-align: top; text-align : var(--ig-left,left); background-color: #F7F7F7; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px" class="hierarchy"><a style="padding-left: 3px; padding-right: 3px; border: 1px maroon solid; font-weight: bold; color: #301212; background-color: #fdf4f4;; padding-left: 3px; padding-right: 3px; border: 1px maroon solid; font-weight: bold; color: #301212; background-color: #fdf4f4;" href="http://hl7.org/fhir/R4/conformance-rules.html#constraints" title="This element has or is affected by constraints ( np-bs-1 )">C</a></td><td style="vertical-align: top; text-align : var(--ig-left,left); background-color: #F7F7F7; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px" class="hierarchy">1..<span style="opacity: 0.50">1</span></td><td style="vertical-align: top; text-align : var(--ig-left,left); background-color: #F7F7F7; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px" class="hierarchy"><a href="http://hl7.org/fhir/R4/datatypes.html#string">string</a></td><td style="vertical-align: top; text-align : var(--ig-left,left); background-color: #F7F7F7; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px" class="hierarchy">Original Bikram Sambat date as YYYY, YYYY-MM or YYYY-MM-DD<br class="constraint"/><span class="constraint">Constraints: </span><span style="font-weight:bold" title="A Bikram Sambat date SHALL be a numeric string in YYYY, YYYY-MM or YYYY-MM-DD form. Days run to 32 because Bikram Sambat months vary between 29 and 32 days." class="constraint">np-bs-1</span></td></tr>
<tr><td colspan="5" class="hierarchy"><br/><a href="https://build.fhir.org/ig/FHIR/ig-guidance/readingIgs.html#table-views" title="Legend for this format"><img src="data:image/png;base64,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" alt="doco" style="background-color: inherit"/> Documentation for this format</a></td></tr></table></div>
</text>
<url
value="http://fhir.digitalhealth.gov.np/core/StructureDefinition/np-core-bikram-sambat-date"/>
<version value="1.0.0"/>
<name value="NPCoreBikramSambatDate"/>
<title value="Bikram Sambat Date"/>
<status value="active"/>
<date value="2026-10-14T11:17:36+00:00"/>
<publisher value="MoHFS Nepal"/>
<contact>
<name value="MoHFS Nepal"/>
<telecom>
<system value="url"/>
<value value="https://mohfs.gov.np"/>
</telecom>
</contact>
<description
value="Carries the original Bikram Sambat (BS) date captured by the source system, as a numeric string in YYYY, YYYY-MM or YYYY-MM-DD form. It may be used on any date or dateTime element; it is deliberately not available on instant, which records a machine timestamp rather than a calendar date a person entered. The Gregorian (AD) element this extension is attached to remains the value of record; this extension only preserves the original BS capture for display and audit. FHIR cannot validate agreement between the two calendars, so keeping the BS value consistent with the Gregorian value is the responsibility of the capturing system. Populate this extension only where a faithful Bikram Sambat capture exists; never derive it and never use it in place of the Gregorian value. The precision of the BS value SHOULD match the precision of the Gregorian element, since a year-only birth year is a common and legitimate capture for elderly patients. There is deliberately no separate Bikram Sambat dateTime form: Bikram Sambat is a calendar with no time component, so on elements that carry a dateTime this extension records only the BS calendar date and the time of day lives solely in the Gregorian value. Where the Gregorian value carries a time, the BS date SHALL correspond to the Asia/Kathmandu local date of that instant rather than its UTC date, because the two can fall on different days across midnight."/>
<jurisdiction>
<coding>
<system value="urn:iso:std:iso:3166"/>
<code value="NP"/>
<display value="Nepal"/>
</coding>
</jurisdiction>
<fhirVersion value="4.0.1"/>
<mapping>
<identity value="rim"/>
<uri value="http://hl7.org/v3"/>
<name value="RIM Mapping"/>
</mapping>
<kind value="complex-type"/>
<abstract value="false"/>
<context>
<type value="element"/>
<expression value="date"/>
</context>
<context>
<type value="element"/>
<expression value="dateTime"/>
</context>
<type value="Extension"/>
<baseDefinition value="http://hl7.org/fhir/StructureDefinition/Extension"/>
<derivation value="constraint"/>
<snapshot>
<extension
url="http://hl7.org/fhir/tools/StructureDefinition/snapshot-base-version">
<valueString value="4.0.1"/>
</extension>
<element id="Extension">
<path value="Extension"/>
<short value="Bikram Sambat Date"/>
<definition
value="Carries the original Bikram Sambat (BS) date captured by the source system, as a numeric string in YYYY, YYYY-MM or YYYY-MM-DD form. It may be used on any date or dateTime element; it is deliberately not available on instant, which records a machine timestamp rather than a calendar date a person entered. The Gregorian (AD) element this extension is attached to remains the value of record; this extension only preserves the original BS capture for display and audit. FHIR cannot validate agreement between the two calendars, so keeping the BS value consistent with the Gregorian value is the responsibility of the capturing system. Populate this extension only where a faithful Bikram Sambat capture exists; never derive it and never use it in place of the Gregorian value. The precision of the BS value SHOULD match the precision of the Gregorian element, since a year-only birth year is a common and legitimate capture for elderly patients. There is deliberately no separate Bikram Sambat dateTime form: Bikram Sambat is a calendar with no time component, so on elements that carry a dateTime this extension records only the BS calendar date and the time of day lives solely in the Gregorian value. Where the Gregorian value carries a time, the BS date SHALL correspond to the Asia/Kathmandu local date of that instant rather than its UTC date, because the two can fall on different days across midnight."/>
<min value="0"/>
<max value="*"/>
<base>
<path value="Extension"/>
<min value="0"/>
<max value="*"/>
</base>
<condition value="ele-1"/>
<constraint>
<key value="ele-1"/>
<severity value="error"/>
<human value="All FHIR elements must have a @value or children"/>
<expression
value="hasValue() or (children().count() > id.count())"/>
<xpath value="@value|f:*|h:div"/>
<source value="http://hl7.org/fhir/StructureDefinition/Element"/>
</constraint>
<constraint>
<key value="ext-1"/>
<severity value="error"/>
<human value="Must have either extensions or value[x], not both"/>
<expression value="extension.exists() != value.exists()"/>
<xpath
value="exists(f:extension)!=exists(f:*[starts-with(local-name(.), 'value')])"/>
<source value="http://hl7.org/fhir/StructureDefinition/Extension"/>
</constraint>
<isModifier value="false"/>
</element>
<element id="Extension.id">
<path value="Extension.id"/>
<representation value="xmlAttr"/>
<short value="Unique id for inter-element referencing"/>
<definition
value="Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces."/>
<min value="0"/>
<max value="1"/>
<base>
<path value="Element.id"/>
<min value="0"/>
<max value="1"/>
</base>
<type>
<extension
url="http://hl7.org/fhir/StructureDefinition/structuredefinition-fhir-type">
<valueUrl value="string"/>
</extension>
<code value="http://hl7.org/fhirpath/System.String"/>
</type>
<isModifier value="false"/>
<isSummary value="false"/>
<mapping>
<identity value="rim"/>
<map value="n/a"/>
</mapping>
</element>
<element id="Extension.extension">
<path value="Extension.extension"/>
<slicing>
<discriminator>
<type value="value"/>
<path value="url"/>
</discriminator>
<description value="Extensions are always sliced by (at least) url"/>
<rules value="open"/>
</slicing>
<short value="Extension"/>
<definition value="An Extension"/>
<min value="0"/>
<max value="0"/>
<base>
<path value="Element.extension"/>
<min value="0"/>
<max value="*"/>
</base>
<type>
<code value="Extension"/>
</type>
<constraint>
<key value="ele-1"/>
<severity value="error"/>
<human value="All FHIR elements must have a @value or children"/>
<expression
value="hasValue() or (children().count() > id.count())"/>
<xpath value="@value|f:*|h:div"/>
<source value="http://hl7.org/fhir/StructureDefinition/Element"/>
</constraint>
<constraint>
<key value="ext-1"/>
<severity value="error"/>
<human value="Must have either extensions or value[x], not both"/>
<expression value="extension.exists() != value.exists()"/>
<xpath
value="exists(f:extension)!=exists(f:*[starts-with(local-name(.), "value")])"/>
<source value="http://hl7.org/fhir/StructureDefinition/Extension"/>
</constraint>
<isModifier value="false"/>
<isSummary value="false"/>
</element>
<element id="Extension.url">
<path value="Extension.url"/>
<representation value="xmlAttr"/>
<short value="identifies the meaning of the extension"/>
<definition
value="Source of the definition for the extension code - a logical name or a URL."/>
<comment
value="The definition may point directly to a computable or human-readable definition of the extensibility codes, or it may be a logical URI as declared in some other specification. The definition SHALL be a URI for the Structure Definition defining the extension."/>
<min value="1"/>
<max value="1"/>
<base>
<path value="Extension.url"/>
<min value="1"/>
<max value="1"/>
</base>
<type>
<extension
url="http://hl7.org/fhir/StructureDefinition/structuredefinition-fhir-type">
<valueUrl value="uri"/>
</extension>
<code value="http://hl7.org/fhirpath/System.String"/>
</type>
<fixedUri
value="http://fhir.digitalhealth.gov.np/core/StructureDefinition/np-core-bikram-sambat-date"/>
<isModifier value="false"/>
<isSummary value="false"/>
<mapping>
<identity value="rim"/>
<map value="N/A"/>
</mapping>
</element>
<element id="Extension.value[x]">
<path value="Extension.value[x]"/>
<short
value="Original Bikram Sambat date as YYYY, YYYY-MM or YYYY-MM-DD"/>
<definition
value="Value of extension - must be one of a constrained set of the data types (see [Extensibility](http://hl7.org/fhir/R4/extensibility.html) for a list)."/>
<min value="1"/>
<max value="1"/>
<base>
<path value="Extension.value[x]"/>
<min value="0"/>
<max value="1"/>
</base>
<type>
<code value="string"/>
</type>
<constraint>
<key value="ele-1"/>
<severity value="error"/>
<human value="All FHIR elements must have a @value or children"/>
<expression
value="hasValue() or (children().count() > id.count())"/>
<xpath value="@value|f:*|h:div"/>
<source value="http://hl7.org/fhir/StructureDefinition/Element"/>
</constraint>
<constraint>
<key value="np-bs-1"/>
<severity value="error"/>
<human
value="A Bikram Sambat date SHALL be a numeric string in YYYY, YYYY-MM or YYYY-MM-DD form. Days run to 32 because Bikram Sambat months vary between 29 and 32 days."/>
<expression
value="$this.matches('^[12][0-9]{3}(-(0[1-9]|1[0-2])(-(0[1-9]|[12][0-9]|3[0-2]))?)?$')"/>
<source
value="http://fhir.digitalhealth.gov.np/core/StructureDefinition/np-core-bikram-sambat-date"/>
</constraint>
<isModifier value="false"/>
<isSummary value="false"/>
<mapping>
<identity value="rim"/>
<map value="N/A"/>
</mapping>
</element>
</snapshot>
<differential>
<element id="Extension">
<path value="Extension"/>
<short value="Bikram Sambat Date"/>
<definition
value="Carries the original Bikram Sambat (BS) date captured by the source system, as a numeric string in YYYY, YYYY-MM or YYYY-MM-DD form. It may be used on any date or dateTime element; it is deliberately not available on instant, which records a machine timestamp rather than a calendar date a person entered. The Gregorian (AD) element this extension is attached to remains the value of record; this extension only preserves the original BS capture for display and audit. FHIR cannot validate agreement between the two calendars, so keeping the BS value consistent with the Gregorian value is the responsibility of the capturing system. Populate this extension only where a faithful Bikram Sambat capture exists; never derive it and never use it in place of the Gregorian value. The precision of the BS value SHOULD match the precision of the Gregorian element, since a year-only birth year is a common and legitimate capture for elderly patients. There is deliberately no separate Bikram Sambat dateTime form: Bikram Sambat is a calendar with no time component, so on elements that carry a dateTime this extension records only the BS calendar date and the time of day lives solely in the Gregorian value. Where the Gregorian value carries a time, the BS date SHALL correspond to the Asia/Kathmandu local date of that instant rather than its UTC date, because the two can fall on different days across midnight."/>
</element>
<element id="Extension.extension">
<path value="Extension.extension"/>
<max value="0"/>
</element>
<element id="Extension.url">
<path value="Extension.url"/>
<fixedUri
value="http://fhir.digitalhealth.gov.np/core/StructureDefinition/np-core-bikram-sambat-date"/>
</element>
<element id="Extension.value[x]">
<path value="Extension.value[x]"/>
<short
value="Original Bikram Sambat date as YYYY, YYYY-MM or YYYY-MM-DD"/>
<min value="1"/>
<type>
<code value="string"/>
</type>
<constraint>
<key value="np-bs-1"/>
<severity value="error"/>
<human
value="A Bikram Sambat date SHALL be a numeric string in YYYY, YYYY-MM or YYYY-MM-DD form. Days run to 32 because Bikram Sambat months vary between 29 and 32 days."/>
<expression
value="$this.matches('^[12][0-9]{3}(-(0[1-9]|1[0-2])(-(0[1-9]|[12][0-9]|3[0-2]))?)?$')"/>
<source
value="http://fhir.digitalhealth.gov.np/core/StructureDefinition/np-core-bikram-sambat-date"/>
</constraint>
</element>
</differential>
</StructureDefinition>