How to fix the error "signer information does not match signer information of other classes in the same package"

In R12.2.0, when I try to compile java classes and generated customall.jar using adcgnjar utility. But swas getting  the below error.

 java.lang.SecurityException: class xxx.oracle.apps.ibe.classname signer information does not match signer information of other classes in the same package


Rootcause for this issue:

There was a folder created under $OA_HTML/WEB-INF/classes/xxx. 

Solution:

Remove the folder xxx under $OA_HTML/WEB-INF/classes and regenrate customall.jar. Restart oacore servers from weblogic server console. Application will be accessed without any issues.


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