Created project sales order add 2 lines for direct delivery. PO is created. Remove one line from SO Error Received:- You cannot delete this line as the confirmed Purchase Order PO#### is associated with it. Please cancel the associated Purchase Order and try again.

LCS Link:-
https://fix.lcs.dynamics.com/Issue/Details?bugId=574283&dbType=3&qc=d62e303d0a4eeae7c22ddd80929dca5e690e92d15656b6bef4c39d45269eca49

This should be fixed, as the workaround is time-consuming