There is a scenario where a purchase receipt reversal is prohibited by the workflow as it would cause a negative product quantity on hand i.e. insufficient QOH. This could have resulted by the intervened sale shipments between the product purchase receipt#1 and the attempted reversal.
To circumvent this you would need to
Create a first stock quantity adjustment to increase the product QOH.
Ensure that the stock adjustment is backdated to the receipt date of purchase receipt#1
Reverse the purchase receipt#1.
Again ensure that the reversal is backdated to the intended reversal date
The above steps are necessary to rectify the insufficient QOH so the impending reversal can be successful
Create a new purchase receipt#2 to replace the original purchase receipt#1 with the correct product details e.g. quantity.
Use the Copy button in the ribbon to create purchase receipt#2 from #1 then update fields as necessary
Create a second stock quantity adjustment to decrease the product QOH by the same quantity specified in the first stock quantity adjustment above
The last steps are necessary to correct the original purchase receipt#1 in the form of #2 and achieve a net zero for the stock quantity adjustments made