3.17.4.1.68 TransactionId (Opnum 74)

  • Article

The TransactionId method is received by the server in an RPC_REQUEST packet. In response, the server MUST return the represented Message.TransactionalMessageSequenceIdentifier.

 [propget] HRESULT TransactionId(
   [out, retval] VARIANT* pvarXactId
 );

pvarXactId: A pointer to a VARIANT that contains a 20-byte array (VT_ARRAY | VT_UI1) containing the transaction identifier. The format for this ID MUST follow the structure as defined in [MS-MQMQ] section 2.2.8, where the Lineage part is the GUID of the sending computer and the Uniquifier part is a transaction sequence number.

Return Values: The method MUST return S_OK (0x00000000) on success or an implementation-specific error HRESULT on failure.

When processing this call, the server MUST follow these guidelines:

  • Set the pvarXactId output parameter to the value of the represented Message.TransactionalMessageSequenceIdentifier.