The operation creates a new TransmissionDescriptor.

Operation Exceptions:
1. NOT_IMPLEMENTED - Raised when EMS does not support this operation.
2. INTERNAL_ERROR - Raised in case of non-specific EMS internal failure.
3. INVALID_INPUT - Raised when transmissionDescriptorCreateData contains invalid data.
4. USERLABEL_IN_USE - Raised when the userLabel uniqueness constraint is not met.
5. CAPACITY_EXCEEDED - Raised when maximum number of Transmission Descriptors has been reached.
