Switzerland DME DTA file Update for 24digit bank account numbers

Dear Users,

This is my first post on SNC.

I have a problem with the DME creation for Swtizerland. I have a vendor with a Morocco bank account number, which has 24 digits.

I hold the bank account number in bank account field and reference field. I have implemented FBKK_3070_ACC_AND_REF for MA country to combine these two fields. I run F110 to pay this vendor and i use program Z_RFFOCH_U to create the DTA file, which i will upload to the bank for payment. 

When I view the DTA file i see only 21 digits for the vendor account.

I do not understand why the program takes only 21 digits of the vendor account number and not the full 24 digits. I have looked at the configuration of the program but i can not see where the problem is.

Please help,

Thanks in advance

Liz