What is happening here? ODBC. r+w on one, r only on other

I have two databases here, and I can read both with Access. However, I can only
write to one with Access, the second one, although it appears to be set up the
same - I think - I can't write to it to add records. Access shows the [Insert
Record] field as greyd out?

Any clues anyone?

ta
bob
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