Not able to generate file in MT101 format

Hello Experts,

Scenario:

I have the client requirement to generate the payment file/DME file in MT101 format.

Setting performed:

I did the config in OBPM1,OBPM2, OBPM3,OBPM4. and assigned the format in FBZP(payment method in country).

Issue:

I am able to generate the file now but the only problem is when I am trying to generate the file for more than 2 documents its missing the header and some other parts for the third document. the First two are generating perfectly fine. How to get this in full?

Is it required to do the setting in transaction DMEE.I have not performed any setting there. if yes please suggest how to do the config In DMEE specifically for MT101.

Please guide