Replicate ISU to CRM error in Premise/POD

Hello,

They wanted to see because I am having a problem making the reply from ISU to CRM of premise (Z has the same fields added). It does not automatically replicate, as perform the initial download (tx. R3AS) the BDOC gives me the following error :

No data records in transport structure BAPIMTCS

Validation error occurred: Module VALIDATE_MSGBDOC_FOR_POD, BDoc type SI_POD.

I have read the guidance of coobook ISU / CRM but have not found the solution.

In the BP and the connection object I have not had the same problem.

Thanks for everything

Horace