I have a query at Key mapping level.
Please read my example.
I have 2 systems SYS1 and SYS2.
While uploading data from sys1
clone field code, map it to remote key
while uploading data from sys2
clone filed code, map it to remote key AND in matching tab select only country and 'update NULL fields only'
Now in DM i can see
when i select 'edit key mapping'i can see
2 rows with 'default' cheked for both records.
Well, i have 2 questions based on the above excersie.
1) why should we use ' 'update NULL fields only'' while uploading 'sys2' data???
2) what does 'edit key mapping' table explain us?