We have one part that suddenly started giving us this error. Engineering checked out a product, tweaked an operation, approved, then went to check-in and gets this error. The only way to check-in the part is to undo the change, then they can check-in. No one has seen the error before and I’m not sur…

Did you try the fix listed on the second link? You have to find which ECO group is the problem, you can’t just use any one, so if the problem happened on a previous ECO group, you have to find open (check out) the problem part in that ECO group, add a material, save, then delete the material. Did y…

Part Check-In Application Error

Epicor ERP 10

Banderson (Brandon Anderson) December 4, 2018, 2:57pm 2

That same exact error shows up here, so maybe they are related?