Hi all, I am trying to figure out the best way to do this - workflow or scripting. Currently we have users editing the Invoice total (usually reducing) AFTER the Payment record is deposited for the same Invoice. This result in having Unapplied amount on the Payment record. We want to prevent this to happen in future by - 1. Blocking the user to edit the Invoice total. But the user should still be able to edit everything else on the Invoice like Memo field, etc. 2. Give a pop-up / error message having a custom message which informs the user why they are being blocked and to contact accounting team if they have any further questions. Now, I tried by adding a Lock record action if Old Record :Total != Total --> but this does not help and it locks the Invoice editing for ALL edits.