| Message Name | Error Message |
| DUPLICATE_OVERLAP | Mutually exclusive course has duplicate or overlapping terms. |
| When entering the same mutual exclusion for multiple term ranges, the ranges cannot overlap. |
| EQUIVALENCY_EXISTS | Course already an equivalent, cannot be a mutual exclusion. |
| An excluded course cannot be both an equivalent and a mutual exclusion to the excluding course. |
| INVALID_CRSE_NUMB | Course number for the course mutual exclusion is not valid. |
| The course number for this subject does not exist in the database. |
| INVALID_CRSE_NUMB_MEXC | Course number for the course mutual exclusion is not valid. |
| The course number for this subject does not exist in the database. |
| INVALID_DATA_ORIGIN | Data origin for the course mutual exclusion is not valid. |
| A valid data origin must be entered for the course mutual exclusion. |
| INVALID_EFF_TERM | Effective term for the course mutual exclusion is not valid. |
| A valid term code must be entered for the effective term of the course mutual exclusion. |
| INVALID_END_TERM | End term for the course mutual exclusion is not valid. |
| A valid term code must be entered for the end term of the course mutual exclusion. |
| INVALID_GRDE_CODE | Grade for the course mutual exclusion is not valid. |
| A valid grade code must be entered for the course mutual exclusion. |
| INVALID_LEVL_CODE | Level for the course mutual exclusion is not valid. |
| A valid level code must be entered for the course mutual exclusion. |
| INVALID_MEXC_TO_ITSELF | A course cannot be a mutual exclusion to itself. |
| The excluded course cannot be the same as the excluding course. |
| INVALID_START_TERM | Start term for the course mutual exclusion is not valid. |
| A valid term code must be entered for the start term of the course mutual exclusion. |
| INVALID_SUBJ_CODE | Subject for the course mutual exclusion is not valid. |
| A valid subject code must be entered for the course mutual exclusion. |
| INVALID_SUBJ_CODE_MEXC | Subject for the course mutual exclusion is not valid. |
| A valid subject code must be entered for the course mutual exclusion. |
| INVALID_USER_ID | User ID for the course mutual exclusion is not valid. |
| A valid user ID must be entered for the course mutual exclusion. |
| MISSING_CRSE_NUMB | Course number is missing and is required by the course mutual exclusion. |
| Course number is required for the course mutual exclusion and cannot be null. |
| MISSING_EFF_TERM | Effective term is missing and is required by the course mutual exclusion. |
| Effective term is required for the course mutual exclusion and cannot be null. |
| MISSING_PARENT | The excluding course does not exist in the catalog. |
| The excluding course of the mutual exclusion group does not exist in the catalog. |
| MISSING_PARENT_MEXC | The excluded course does not exist in the catalog. |
| The excluded course of the mutual exclusion group does not exist in the catalog. |
| MISSING_SUBJ_CODE | Subject is missing and is required by the course mutual exclusion. |
| Subject is required for the course mutual exclusion and cannot be null. |
| MISSING_USER_ID | User ID is missing and is required by the course mutual exclusion. |
| User ID is required for the course mutual exclusion and cannot be null. |
| PK_NOT_FOUND | Cannot find record using primary or unique key for the course mutual exclusion. |
| Course mutual exclusion record cannot be found in the database using the primary or unique key. |
| P_DELETE_FAILED | Cannot delete course mutual exclusion because the record does not exist. |
| Course mutual exclusion record cannot be deleted because it does not exist in the database. |
| P_SEQUENCE_ERROR | Oracle sequence error occurred on the primary key of the course mutual exclusion restriction. |
| Report this error to your system administrator. |
| RECORD_EXISTS | Course mutual exclusion record cannot be created because it already exists. |
| Course mutual exclusion record already exists in the database. |