Is there a way to correct shipment after invoice?

Hi 

What is the status of Invoice linked to Shipment?

if the Invoice is in balanced status and Update IN is not posted then we can delete the Invoice and go back to shipment and correct the shipment.

if Invoice is released then try to cancel Invoice.

if Inventory posted then please follow steps for next process 

Once Inventory is posted you need to follow the below steps to process inventory reverse but we cannot do anything with an updated shipment.

We can reverse the Inventory by placing return orders in Acumatica. The below steps may help you.

1. Create a Return type of order ex: (RC type - RMA )
2. Create Receipt for this order (From Actions) 
3. It will create shipment type as a “Receipt” and then click on Update IN (It will reverse the Inventory)
4. Prepare an invoice and then will create a “Credit Memo” document. 
5. If Aleady payment is collected for the actual order, we need to create a “Customer Refund” in the Payments and Applications screen for the actual payment.
6. Finally, apply the below documents to the Actual Payment and release. Payment and Invoice will be closed.
   1. Credit Memo
   2. Actual order Invoice