i have added custom fields to table mseg through append structure .i activated structure .it was activated successfully.when i activate table mseg it was giving warnings that shown below.
enhancement categery 3 possible but include or subtype not classfied.
index mseg-01a not in custmer name space
index mseg-o1b not in the custmer name space.
Michael Wackerbauer replied
Those are all standard messages and have nothing to do with your append. You can just ignore them - and they are warnings only anyway.
We didn't append anything to table MSEG in our system but get exactly the same warnings when checking the table.