I am using BAdI ME_GUI_PO_CUST and ME_PROCESS_PO_CUST to add a customer specific tab in ME21N,22N,23N transactions.
I am able to save the data in the new tab into the 'Z' table that has been created and retreive the data back from the table into the tab.
But whenever there is a change made in this tab alone, then i am not able to save the document changes, since i get the message 'No data Changed'. To make a change in this tab, there needs to be a change in some other field, only then it saves this change also.
What needs to be done for the standard program to capture the changes that has been made in this field alone?