Any patches required? Same code not working on client system

Hi Gurus,

We have created an ABAP Proxy on the local CRM system to pick attributes from XML sent by XI and tested it. It worked fine. And the attributes got updated in the CRM tables.

Then we deployed the same proxy code on the client system (not a single change in the code), it doesnot work.

Though it does not throw an error, the CRM tables aren't getting updated.

Are there any patches that need to be deployed on the client system.

Please help. Points shall be rewarded.

TIA.

Chaitanya.