How to modify system matrix in SO

Hi Everyone!

I'm using SDK to create one button in SO to delete some row with price =0. By clicking user define button, it delete all items with 0 price.

After I update this document with system button, the message error came up like below:

Another user or another operation modified data; to continue, open the window again '' (RDR1) (ODBC -2039) [Message 131-183]

Any idea, please share. thanks in advance.