when we amend any field for a completed contract it is not saving showing irrelvant message

Issue No: LG-2105
Created 4/18/2019 10:05:23 AM
Type Bug
Priority Major
Status Closed
Resolution Fixed
Fixed Version 18.3, 19.1
Description Create a contract and crate inventory receipt.   Open the same contract   enter any field like customer reference. click on save   it is showing beloe messsage.   [http://irelyserver1.com/irelyi21sco/#]     !pastedImage_d116502_0.png!