Check some fields before to save Shipment Document
I need to check some fields before to save de shipment document (VT01N / VT02N ).
The messaje error must stop the saving process and send the error mesagge by screen.
Where and how can I do this ??
For example: IF VTTK-ADD01 <> "01" -> send error mesagge.
Forgot to mention that they (1 and 2) are Function Modules (SE37).
Item 2 should read
and especially EXIT_SAPLV56U_002 which is called from 1 EXIT_SAPLV56U_002.
Cut and Paste error!!!