Getting error DC396004 Protocol error, invalid packet, reason = 4 IDMSJSRV JPAC*ERR

Document ID : KB000044541
Last Modified Date : 14/02/2018
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Question: 

We are getting these error messages:

DC396004 V20 T1192750 Protocol error, invalid packet, reason = 4

IDMSJSRV: JPAC*ERR

1E79C700 0D0A0D0A 0D0A0D0A 0D0A0D0A 0D0A0D0A 0D0A0D0A

 

What can cause this error?

 

Answer: 

The error indicates the  IDMS Server task received a packet with a bad packet id. The id in the first 4 characters should be X'CACACACA'. The text that follows the error message will dump the packet data, in the above example the packet id has X'0D0A0D0A'. 

This error is usually caused by running an old version of the IDMS Server client software, from prior to  release 17.0.