>I encountered an error message 'Table buffer for alias "vxeand" contains uncomittted changes' when I try to create a new record. This error is on my procedure Dpytxnee.Refreshform.

Quote from MSDN Library:

'Table buffer for alias "name" contains uncommitted changes (Error 1545)
The named cursor has a modified table buffer and these changes must be explicitly committed, using TABLEUPDATE( ), or discarded, using TABLEREVERT( ), before either the cursor can be closed or the buffering mode changed.'

My guess is that this is exactly what's happened.

HTH