Patch 12678526 . fails with Missing prerequisite codelevel for entity 'ad'.

Hi,
Patch  12678526 . fails with Missing prerequisite codelevel for entity 'ad'.
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AutoPatch error:
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Missing prerequisite codelevel for entity 'ad'.

This patch requires the following codelevel or higher: 'R12.AD.B.2'.
The current on-site codelevel for the entity 'ad' is : 'R12.AD.B.1'.

In order to apply this patch you must first apply a patch that introduces
at least the minimum required codelevel.

You may merge this patch with a patch that introduces the required codelevel.
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AutoPatch error:
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A fatal error related to codelines or codelevels has occurred.

See messages above for details.
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Regards,
Eric.