Value calculation

Dear expert

I am facing one problem in item costing

"Item Master Data" is batch wise manage and fifo valuation method.

we created a GRN, after that may be goods return or inventory transfer.

But at the time of goods return value goes to material gain account and raw material value is different from GRN raw material value

GRN Entry

GINR :- credit 531181

Materisl:- Debit 531181

Goods Return entry

GINR :- credit -531181

Materisl:- Debit -504840.803

Price Difference Account:- Debit -26340.197

Why value is update price difference account and how we can resolve that issue.

Please try to provide me solution as soon as possible