Customer Account Group Issue

Hello,

We have done all the settings for middleware and correct settings in PIDE. When we are replicating customers from ECC to CRM using R3AS, we are getting error Account Group AB does not exist. The problem is that AB account group we are not using anywhere, it's not even in PIDE.

We have changed all account groups again and checked everywhere, still in error in R3AS it's giving 'Account Group AB' does not exist.

Is it possible it got hard coded somewhere?  Please help

thanks,

BW