add missing mandatory tags for OrganisationIdentification and PrivateIde...

* add missing mandatory tags for OrganisationIdentification and PrivateIdentification

Tags 'OrgId' or 'PrvtId' needs 'Other' and 'Id' tags to put id, examples:

....
      <InitgPty>
        <Nm>name</Nm>
	<Id>
          <PrvtId>
            <Othr>
              <Id>ES21001X66668045</Id>
            </Othr>
          </PrvtId>
        </Id>
      </InitgPty>
....

...
      <InitgPty>
        <Nm>name</Nm>
	<Id>
          <OrgId>
            <Othr>
              <Id>ES21001X66668045</Id>
            </Othr>
          </OrgId>
        </Id>
      </InitgPty>
...


Thanks!