FF68 Due On is mandatory in batch input mode

Hi team,

The company receives checks a payment media and periodically deposit them to the bank.

For this the following steps are done

1. FF68 Loading ckecks

At this point the system shows me that exist an error, but I can realize how to follow up or detect the cause

2. SM35 to follow step by step the corresponding posting

Here the problem : why the system is requesting me Due-on field ?

3. Customizing background

According to the customizing, and I have tested with all the options..1,2,3,.....the field Due On should be filled up automatically

Besides, both account fields status and posting key field status are set up as optional.

Please could you help me about this ?

Thanks in advance!

Ismael