CAS9899E Task 0002 Error: Invalid packet header received

Products

• COMMON SERVICES FOR Z/OS

Issue/Introduction

Getting the FOLLOWING error messages repeated in the CCISSL (CCITCP) task:

CAS9855I Task 0002 has connection from hostname(ip_address)/xxxxx
CAS9899E Task 0002 Error: Invalid packet header received

Cause

The CCITCP/CCISSL task will ONLY accept a connection from either CCI/PC or the CCI Java client. 

Resolution

The CAS9855I message is indicating that some unexpected application is attempting to connect to port 1202

Look on the system identified by hostname(ip_address) and locate that application and correct its configuration.