A file transfer initiated from z/OS to a new server failed with messages:
XCOMM0780E Txpi 701: Received remote data block at 0X1A9281E4 starting with invalid EyeCatcher
XCOMM0780E Txpi 227: Socket received 0 bytes: partner closed socket. Last error
XCOM received an unrecognized communication.
"XCOMM0780E Txpi 701: Received remote data block at 0X1A9281E4 starting with invalid EyeCatcher" tells us that the code is not recognized or used by XCOM.
Contact Broadcom Support if you still have questions.