Derivation error with Tax accounts when making a payment

We recently changed the configuration for the dummy commitment item we have for all tax accounts from 40/3 to 30/3/Statistical in order to make RFFMS200 program to work properly

When we post an invoice everything is working as expected, but when we try to make a payment the system is requesting a Fund Center for the tax account.

We went through FMDERIVE but we couldn't find where the error is or what we need to add in this transaction in order no to have this error.

Any help in solving this issue will be appreciated.

This is our OFUP setting:

We are using ECC 6.04 and the enhanced version of RFFMS200 for processing the payments.

Thanks in advance.

Regards, Mauro.