When a change is made to a Purchase Order in Supply Chain, such as changing a quantity, this is not passed correctly through to Delta.
There are a number of causes for this issue:
Check the status of the Goods In Note in Delta; If this is anything other than Pending or Pre-receipt, it is not possible to update the Delta Goods In, so the update will fail.
Potential data issues
If none of the above points resolves the issue, please raise a new case online and reference the title of this article.