Field help (BSISUSACT) 

Enter a suspense account. If you selected the Suppress intermediate posting check box, no postings are made to a suspense account.

Transactions not matched to an open item or a G/L account are posted to this account for manual reconciliation later.

Note: Because the suspense account is used in the payment generation process, an address code needs to be assigned to this account in the Addresses section in Accounts (GESGAC).