EANCOM Messgae failing in Receiver Comm. Channel with "Cannot find Segment Elements for messageVersion 01B, message subversion 000000"

Hi Experts,

I have configured an IDOC to EDI scenario, where we have used EANCOM as our target structure. When we trigger an IDOC from ECC some messages are getting failed in our PI with the below error

"MP: exception caught with cause java.lang.RuntimeException: Can not find Segment Elements for messageVersion 01B, message subversion 000000, message agency UN, segment S_UNB, newFirstlevelElement C_S001, currentIndexLevel1 0 "

PFB screenshot

We have maintained all the modules properly in the receiver communication channel.

PFB screenshot

But when we resend the same file explicitly or When the adapter retries again by itself, the file is reaching the destination automatically.

PFB screenshot

When we trigger a new IDOC, it is reaching the destination without any error.

We have properly configured the B2BIC and all the subversion's are available for EANCOM.

Need your guidance here.

Regards,

Ragulan