PEPPOL-T012-R018
- Message
 A Registry Object MUST have a UBL Document Schema.
- Context
 query:QueryResponse/rim:RegistryObjectList/rim:RegistryObject- Test
 rim:Slot[@name='ublDocumentSchema']- Usage
 
A Registry Object MUST have a UBL Document Schema.
query:QueryResponse/rim:RegistryObjectList/rim:RegistryObjectrim:Slot[@name='ublDocumentSchema']