OK - I am experiencing the same problem - and attempted to understand "was the wrong "TDS-Format ID" - so I specified the format id from the "tag delimited" tab on both the mq ...
Under MQSI 2.0.2, I was able to complete the LOAN message flow in
> SupportPac IC03-Business Scenario. Now in MQSI 2.1 the LOAN message flow
> fails in the LOANIN Node (during parsing of message) - ...