Use
You carry out this procedure in the PI sheet if, for some reason, you want to cancel a signature process that has been started by somebody else and withdraw the signatures executed so far.
Prerequisites
Procedure
In ABAP list-based PI sheets, choose the icon for the digital signature instead.
The dialog box appears in which you can execute digital signatures.

When you cancel a signature process, the system does not save any comments. For this reason, do not enter a text.
Signature process.The system checks:
Depending on the results of these checks, processing is continued as follows:
The function is canceled after a certain number of unsuccessful attempts that can be defined specifically for each customer. The user is locked and can no longer execute digital signatures. If a system signature was used, the user is even locked against logging on to the system again.
Result
All signatures executed during the signature process are withdrawn. This transaction is documented in the log for the digital signature.