Inbound GDS data error (gds , length , size )
The Client received invalid data from a server. The data does not have a valid CICS® data stream header. The gds value should be either 0x12F2 or 0x12FF, the length value gives the expected data length, and size gives the true received length.
The message is written to the error log and processing continues.
If the problem persists, contact your service organization.