R12.1.3 upgrade u9239090.drv : This patch is not compatible with your current codelines. If you want

hi,
When applying R12.1.3 upgrade u9239090;drv the following error occurs :

Determining target release...

Current target    release is  12.1.1


STOP_TASK: [Other driver and release-related logic] [] [Tue Jun 19 2012 14:37:23]



STOP_TASK: [Get Oracle Applications Release and read driver file] [] [Tue Jun 19 2012 14:37:23]



STRT_TASK: [Prereq checking logic] [] [Tue Jun 19 2012 14:37:23]


AutoPatch error:
--------
This patch is not compatible with your current codelines.

This patch is compatible with: entity 'csc' - codeline 'B'.
There is currently no codeline registered for the entity 'csc'.

If you want to introduce the above codeline for this product,
you must first apply a separate patch that introduces the codeline.