| 400 | INVALID_INPUT | Invalid parameter value/Input parameter missing |
| 400 | INPUT_PARAMETER_MISSING | Required input parameters are missing |
| 400 | UNSUPPORTED_OPERATION | Not found |
| 400 | UNABLE_TO_UNPUBLISH_WITH_MEMBERS | Cannot unpublish with members |
| 400 | BATCH_DATE_AND_SESSION_DATE_MISMATCH | Batch date session date is mismatched |
| 400 | NO_SESSION_FOUND_TO_PUBLISH | zp.lms.publishblended |
| 400 | NO_MANDATORY_FILES_OR_LINK_FOUND_TO_PUBLISH | zp.lms.filesnotfound |
| 400 | UNSUPPORTED_OPERATION_BL_COURSE_PUBLISH_VIA_COURSE_API | Blended learning course cannot be published |
| 400 | UNSUPPORTED_OPERATION_BL_COURSE_UNPUBLISH_VIA_COURSE_API | Blended learning course cannot be unpublished |
| 400 | UNSUPPORTED_OPERATION_EL_COURSE_PUBLISH | Elearning course cannot be published |
| 400 | UNSUPPORTED_OPERATION_EL_COURSE_UNPUBLISH | Elearning course cannot be published |
| 400 | UNABLE_TO_DISABLE_COURSE_BEFORE_PUBLISH | Unpublished courses cannot be disabled |
| 400 | UNABLE_TO_SUGGEST_COURSE_BEFORE_PUBLISH | Unpublished courses cannot be suggested |
| 400 | UNABLE_TO_ADD_LEARNERS_BEFORE_PUBLISH | Publish the course/batch to add learners |
| 400 | COURSE_ALREADY_COMPLETED | Course/Batch already completed |
| 400 | UNABLE_TO_MARK_AS_COMPLETE_AS_FILE_LOCKED | File is locked so unable to complete/In complete file |
| 400 | UNABLE_TO_MARK_AS_COMPLETE_AS_CONTENT_LOCKED | Content is locked so unable to complete/In complete file |
| 400 | UNABLE_TO_MARK_AS_COMPLETE_AS_LINK_LOCKED | Link is locked so unable to complete/In complete file |
| 400 | UNABLE_TO_MARK_AS_COMPLETE_AS_MODULE_LOCKED | Module is locked so unable to complete/In complete file |
| 400 | UNABLE_TO_UPDATE_MARKS_AS_LEARNER_NOT_JOINED_COURSE | Unable to update marks as learner not joined course |
| 400 | UNABLE_TO_UPDATE_MARKS_AS_ENTERED_MARKS_ARE_INVALID | Unable to update marks as entered marks are Invalid |
| 400 | UNABLE_TO_MARK_ATTENDACE_AS_LEARNER_NOT_JOINED_COURSE | Unable to update marks as learner not joined course |
| 400 | UNABLE_TO_MARK_ATTENDACE_BEFORE_SESSION_COMPLETION | Session not completed, So cannot mark attendance |
| 400 | UNABLE_TO_PUBLISH_AS_ASSESSMENT_NOQUESTIONS | Unable to publish as Online test does not contain any questions |
| 400 | UNABLE_TO_UNPUBLISH_AS_ASSESSMENT_ATTEMPTED | Unable to un publish as Online test is attempted by learner |
| 400 | UNSUPPORTED_OPERATION_CUSTOM_FEEDBACK_SUBMIT | Not found |
| 403 | NO_PERMISSION | Sorry! You are not authorized to do this operation. |
| 404 | COURSE_NOTFOUND | Not found |
| 404 | NOT_FOUND | Not found |
| 404 | COURSE_NOT_FOUND | The course could not be accessed |
| 404 | BATCH_NOT_FOUND | The batch could not be accessed |
| 404 | SESSION_NOT_FOUND | The session could not be accessed |
| 404 | BATCH_SCHEDULER_NOT_FOUND | Not found |
| 404 | LEARNER_NOT_FOUND | Not found |
| 404 | TRAINER_NOT_FOUND | Not found |
| 404 | MODULE_NOT_FOUND | Not found |
| 404 | APPROVAL_NOT_FOUND | Not found |
| 404 | ROOM_NOT_FOUND | Not found |
| 404 | SETTINGS_NOT_FOUND | Not found |
| 404 | ACHIEVEMENT_NOT_FOUND | Not found |
| 404 | EVALUATION_NOT_FOUND | Not found |
| 422 | MAXIMUM_LIMIT_EXCEEDED | Maximum limit exceeded |
| 422 | COURSE_ALREADY_PUBLISHED | Course already published |
| 422 | BATCH_ALREADY_PUBLISHED | Batch already published |
| 422 | UNABLE_TO_DELETE_COURSE_AFTER_PUBLISH | Course can only be disabled after the publish |
| 422 | UNABLE_TO_DELETE_BATCH_AFTER_PUBLISH | Batch cannot be deleted after the publish |
| 422 | UNABLE_TO_DELETE_SOURCE_BATCH_OF_CLONING | Source Batch of scheduled cloning cannot be deleted |
| 422 | COURSE_NOT_APPLICABLE_TO_USER | Not applicable to the user |
| 422 | UNABLE_TO_ADD_TRAINERS_AS_LEARNER | Course trainer cannot be added as Learner |
| 422 | UNABLE_TO_ADD_COURSE_ADMIN_AS_LEARNER | Course admin/owner cannot be added as Learner |
| 422 | USER_ALREADY_ENROLLED_AS_LEARNER | User already enrolled |
| 422 | UNABLE_TO_SKIP_TEST | Unable to skip the online test |
| 422 | PRETEST_ALREADY_EXISTS | Online Test already added to the Pre course activities |
| 422 | POSTTEST_ALREADY_EXISTS | Online Test already added to the Post course activities |
| 422 | REMINDER_EXECUTION_TIME_ALREADY_EXISTS | The given reminder time value already exists |
| 422 | COURSE_TYPE_AND_REMINDER_TYPE_MISMATCHED | The given course type does not match the specified reminder type |
| 422 | START_FEEDBACK_BEFORE_SUBMIT | Start Feedback before submit |
| 422 | COURSE_NOT_PUBLISHED | Course not published |
| 500 | INTERNAL_ERROR | Sorry! Server error occurred |
