-   eClaimLink Provider, Payer or TPA ID.
-   For transaction pairs the receiver of the first transaction must be the sender of the second transaction.
-   Example if a TPA receives a ClaimSubmission from a provider, then that TPA (not the insurer) must send the RemittanceAdvice to the provider

<xs:simpleType name="HeaderSenderID">
    <xs:annotation>
        <xs:documentation>
        -   eClaimLink Provider, Payer or TPA ID.
        -   For transaction pairs the receiver of the first transaction must be the sender of the second transaction.
        -   Example if a TPA receives a ClaimSubmission from a provider, then that TPA (not the insurer) must send the RemittanceAdvice to the provider
      </xs:documentation>
    </xs:annotation>
    <xs:restriction base="xs:string">
        <xs:minLength value="1" />
        <xs:pattern value="[\S]*" />
    </xs:restriction>
</xs:simpleType>