You may be getting a ‘Internal server 500 error’ and the error bellow, after changing and attribute and submitting it for approval.
An error occurred during the last operation.
Error: IFormContext with key "FormContext_3" not found in SessionCache.
Object: <DN of the Object being processed>
You tried the solutions offered on the article below, but the issue persists:
500 Error when using web console to perform different tasks (104160)
1) When you enter a reason for approval, you’ll see a dialog box with the following message:
"Your Operation has been submitted for approval"
2) Within the box, you are given 2 options: ‘Save’ or ‘Cancel’;
3) To avoid the 500 error, please do not press ‘Save’. Press ‘Cancel’ instead.
This will be fixed on a future release of the product. If you require this immediately corrected, please contact support for a hotfix referencing the defect ID TF00434126.