>Hello everybody. I know this is a topic already treated. But I do not know if it is resolved.
>It happens that when I workig with a Master-Detail Forms that contains a Grid Control for the detail and the buffer for the table of the grid is set to 5, sometimes I received the error message: "Record is in use by another user" and the table of the grid get locked and nobody that use this table in other process o forms can update any record.

I have the same problem but I'm leaning for this method to work.

REPLACE cDetail WITH "Tata" IN Detail

but not this:

SELECT Detail
LOCATE FOR parent=detail && position on the record
REPLACE cDetail WITH "Tata" && I think that it lock the child record

Hope it helps