ODBC connection Error when trying to Insert data using Batch job

Dear Friends,

I wrote a method to insert the data into two fields in Cust table, then I added the method to a class which extends RunBaseBatch.

When the batch scheduled in DEV and Test , batch executed successfully and records got inserted, but in production the batch got failed with the below error.

"ODBC operation failed.Unable to log on to the database.

[Microsoft][SQL Server Native Client 10.0][SQL Server]Login failed for user 'XXXX\AX.AOS1'.

Object 'OdbcConnection' could not be created"

I have verified permissions for AX.AOS1 in DEV and PROD and both having similar access.

Can someone please advise me the possible solution for this issue?

Thanks

Mohan