Dears

We sell scrap to the customers accepting a security deposit.

The deposit we receive from the customers is retained with us until the contract period is expired.

How can we achieve this in SAP. I configured a payment block reason with 'not changeable' option. But while posting the document, system says 'payment release in inactive'. We do not want the work flow to be implemented for this purpose.

How can we achieve this requirement ?

Thanks.