Error - 'This is an auto generated contra detail transaction line and cannot be edited directly...' when trying to correct a journal.

When the incorrect bank account (for example, the current account instead of the deposit account) has been used to transfer money in the cash book, the user might receive the above error message if attempting to use corrections.
This is due to a system limitation.
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In this instance, to be able to resolve the issue, the user would need to post the incorrect posting in reverse to cancel each other out.
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Once this has been done, the correct posting can be made as required, using the correct account