Receipts validation

["Pim van der Eijk" <pvde@sonnenglanz.net>]

 

Another issue from discussion with an AS4 implementer:

 

If MSH A sends a message M to MSH B and B sends a Receipt back to MSH A,  MSH A can correlate the messages based on MessageId and RefToMesssageId.  

 

Apart from correlation of identifiers, is MSH A also required to validate that the receipt indeed matches M?    I.e. for a reception awareness receipt, the UserMessage headers should have the values from the correlated UserMessage.  For an NRR receipt,  there should be a one-to-one match for ds:References and their href and digest values.    

 

If there is such a validation and MSH A detects a difference,  which ebMS error is used to report this? 

 

Pim