Canceling of Material Documents in ABAP List-Based PI Sheets 
Use
There are two ways in which you can post goods movements from within the PI sheet:
If you have posted a goods movement, and you notice that the data posted is incorrect, you can cancel the data from within the PI sheet.
For information about how to access the cancel function, see
Canceling Material Documents Within ABAP List-Based PI Sheets.Features
To carry out the function, you need to proceed in the same way as when you cancel a material document within inventory management; see
Entering a Reversal Document with Reference to a Material Document.
If the goods movement you want to cancel was triggered using a process message, you will find the number of the material document in the destination-specific message log of the corresponding process message; see