Error - Correction quantity is larger than available quantity

This post is with continuation to my previous post Correction For RMA where I made correction in an RMA lines before I deliver the goods, here customer has requirement to do the correction after we Deliver the goods in the inventory. This is not possible with out of box functionality. Here I will explain this with am example.

 

Suppose we have RMA line

• With Order qty = 10.
• Book the Order line
• Receive the Order line (Save, it in turns execute RTP), just receive and don’t deliver the qty. ( it will populate the shipped quantity field).
• Perform the Deliver Transaction, it trigger the RTP ( it will populate the fulfilled quantity field).
• System will progress the line to Workflow Invoicing Activity and finally close.
• Now try to perform Correction transaction with Qty = -6 (Minus), system will prompt error message (Correction quantity is larger than available quantity).