Error in uncompressing the service content

Hi guys,

I’m facing an issue with receiving RN transactions.
For some transaction from one partner, I’m getting error: "Error in uncompressing the service content" (seems that IS is unable to unzip RN transaction)
When partner resends the same transaction again, it’s processed without problem.

Unfortunately, I ddin’t find any description/hits for this error.

Could you please advise what is wrong and how to fix it?

I’m working on wM 6.5

thank you very much!