Issue with PO credit note in AX 2012

I have created one PO which generates 3 receipts and 3 invoices and for the third invoice we have returned the product back to the vendor by writing a credit note(for 3rd invoice alone returned to vendor). While try to mark the credit note with the 3rd invoice by using PO<<lines <>Inventory >> Marking. System always shows the invoice which was posted first.

I am not sure is it some kind of system bug or some mistake which we are doing from our end . Need help on this urgent!!!

Dear Rohit,

credit note can be created on basis of PO not on basis of invoice.

so basically you can select the items from the PO and can make the credit note for the same.

the amount will be deducted from the vendor and inventory will be added in your stock.

hope this is clear.

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