FBICR3 - missing documents (open items)

Dear all,

I am using ICR process 003 (vendor/customer open items).

However, the system does not catch all open items of customer account. Due date is 31.12.2018 / I have 15 documents with document type RV (=automatic import via SD) and 6 documents with document type DR (=manual booked via FB70).

The 6 manually booked documents (DR) are missing after data selection. They do not appear in the icr tables. As far as I know there should be no restriction to specifc document types in customizing?!?

Any ideas?

Best

Tino