RE: Problem with PO in wrong currency/cannot undo posted receipts
Hello Chris,
Sorry for my late reply.
You are right when posting the Purchase receipts with some Currency code system is filtering the data at Invoice document per Currency Code and we aren't able to get posted receipts unless we set same currency code as mentioned at posted receipts documents.
I would say that your case isn't so simple, in fact the only way that I can see that you might be able to proceed and undo the posted receipts already linked to a sales flow is via Item card "Application Worksheet" and unapplied those Sales to the Posted Receipts entries in order to have those Item quantities available at Stock and then proceed with the Undo Receipts.
Be aware that you will need to manually apply those Sales entries to others Items entries, which mean this only works in case you have stock.
Once you have done this process you will be able to proceed with the PReceipts undo and PO currency changes and post the document with the current currency code.
In case you want to link again those posted Sales to these PReceipts you just need to repeat the steps at Application Worksheet, in order to unapplied the sales entries temporary applied to others item entries and apply to these new entries.
System performs always a cost adjustment whenever each time we made some manual apply or unapplied entries at Application Worksheet.
This task will require some additional work from your side but is the only way I can see to overpass your issue.
Hope this can help you to move forward.