GR value not 0 though the GR quantity is 0 in PO history

Hi,

We have an issue with a PO in which, the finance team has wrongly created invoice. After creation of IR, GR was done. But the person who has done GR didn't know that the IR value was wrong, by the time FI team told that IR value is wrong, GR has already been done. Later we had reversed the GR, by doing which GR quantity was 0 but GR value still exists in PO history.

Please help how to make this value 0.

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Thanks and Regards,

D. Krishna Bharadwaj.