White Screen in Interaction centre while calling ECC RFC after ECC upgradation

HI,

In my scenario after confirming BP in Interaction centre we are calling Claims Management system through RFc to fetch the list of records.

Recently we have upgraded our CM system to EHP7 after this we are getting white screen after confirming BP.(once we click on confirm button we are calling CM system's RFC)

Can anyone please help me to resolve this issue.

We are using CRM ABAP 7.0 version