We are getting external loader errors, when we run mappings against teradata using mload. From where do we get the actual cause of the fail?

We are not getting enough info from session log, ldr log, ET/WT/UV tables etc.. Where else shall we look into?

Can this be a problem with loader connection created in informatica?

For eg. if we use an update loader connection, the error is 'Table/view does not exists' where as it actually exists.

For delete loader connection, error is 'Invalid Multiload delete statement'

Look forward to some advices,