Error while creating a credit memo with reference to invoice

HI aLL,

I am facing one issue while creating a credit memo request in VA01 with reference to invoice.

Our project stock is valuated stock.

When we try top copy the error pops up" Valuated project stock not allowed with customer stock." and the line item is not copied in the credit memo.

Diagnosis:The entered wbs manages a valuated project stock,at the same time sales order stock is maintained on sales order line item.this combo is not allowed as different valuation methods within a project is not allowed.

Tarun Kapur