Auto Invoice Error : Invalid Value of Conversion Type (CONVERSION_TYPE)

When we run the Auto Invoice Import Program the record errors out with the details Invalid Value of Conversion Type (CONVERSION_TYPE).
This Error occurs because of the below reason :

1. The Conversion Type Specified is not defined in the system
2. Some times the user by mistake updates the value of USER_CONVERSION_TYPE of the table : GL_DAILY_CONVERSION_TYPES where as the value needs to be picked from the field CONVERSION_TYPE.