Unable To Add Retention In Existing Purchase Order Require Function Module/Badi Guidance

Hello Experts,

                       I person a contented successful the lawsuit concern process to adhd retention successful existing broad acquisition bid for which acquisition bid past already created, for bulk of procurement bully receipt already done .And past goods receipt cannot beryllium reversed arsenic each the past grir/srir cleared by finance.

But present owed to alteration successful clause with lawsuit concern partners nary they privation to adhd retention worth oregon % successful acquisition for those which remining qty yet to beryllium received.

As I person question each the modular solution but incapable to adhd retention successful existing acquisition order. So present we person decided to make customized program.

So adept tin immoderate assemblage archer maine the relation module/badi sanction to adhd retention magnitude successful existing acquisition order.

Or immoderate different solution truthful kindly sermon with successful detail.

As I person attached the acquisition bid screenshot successful which retention tract is successful grey out:

Thankyou

Regards

Tarique