3.2.7.5 Progress
When the i:EventType value of a SOAP response is Progress, the client SHOULD verify that the value of the __MI_CallbackRegistration option in the Request has the 0x08 bit set. The client SHOULD discard the message otherwise.
All required sub-elements MUST be present, as specified in section 2.2.4.49. Otherwise, the client MUST delete the entry in the CimOperations table and report an error to the higher layer protocol.
The client SHOULD send the i:Description text to the higher layer protocol in an implementation-specific manner.