no payment entries in IBY_USED_PAYMENT_DOCS
select * from iby_payments_all where paper_document_number is null
1) please confirm that a row will not exist in for above query of iby_payments_all where paper_document_number is null.
2) If for a situation row may exist in IBY_USED_PAYMENT_DOCS table for above query data, please give details of how to query such a situation.