Message type: E = Error
Message class:  RSTT0 - Trace Tool: Message Class Engine Layer 
Message number: 278
Message text: Time details for job scheduling are invalid; scheduling will not occur
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The SAP error message RSTT0278 indicates that there is an issue with the time details for job scheduling in the SAP system. This error typically arises when the scheduling parameters for a background job are not set correctly, leading to the job not being scheduled as intended.
Cause: Invalid Time Format: The time specified for the job scheduling may not be in the correct format or may contain invalid values. Missing Time Details: Required time details such as start time, end time, or frequency may be missing. Incorrect Time Zone: The time zone settings may not be configured correctly, leading to discrepancies in scheduling. System Date/Time Issues: The system date or time settings may be incorrect, causing conflicts with the job scheduling. Job Definition Errors: There may be errors in the job definition itself, such as incorrect parameters or missing information.
Solution: Check Job Scheduling Parameters: Go to the job definition in transaction code SM37 (Job Monitoring) or SM36
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