OIM Error: java.io.InvalidClassException: oracle.iam.request.vo.BasicRequest; local class incompatible:

Error while running RequestService API

Exception in thread "main" javax.ejb.EJBException: failed to unmarshal interface oracle.iam.request.vo.Request; nested exception is: 

java.io.InvalidClassException: oracle.iam.request.vo.BasicRequest; local class incompatible: stream classdesc serialVersionUID = -5945010536412041491, local class serialVersionUID = -7263199514123717932; nested exception is: java.io.InvalidClassException: oracle.iam.request.vo.BasicRequest; local class incompatible: stream classdesc serialVersionUID = -5945010536412041491, local class serialVersionUID = -7263199514123717932

java.io.InvalidClassException: oracle.iam.request.vo.BasicRequest; local class incompatible: stream classdesc serialVersionUID = -5945010536412041491, local class serialVersionUID = -7263199514123717932

Solution:

Copy the 'oimclient.jar' and 'eclipselink.jar' from the location 'MIDDLEWARE_HOME/Oracle_IDM1/server/client/oimclient.zip' and add the same in your classpath.