Message type: E = Error
Message class:  /SAPCEM/DISPO -  
Message number: 001
Message text: Requirement start must be smaller than or equal to requirement end
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The SAP error message /SAPCEM/DISPO001 indicates that there is an issue with the requirement dates in the context of SAP's Capacity Evaluation Management (CEM) or similar modules. Specifically, the error states that the "Requirement start must be smaller than or equal to requirement end." This typically occurs when the start date of a requirement is set to a date that is later than its end date, which is logically incorrect.
Cause: Incorrect Date Entry: The most common cause is that the user has entered the start date of a requirement after the end date. Data Migration Issues: If data has been migrated from another system, there may be inconsistencies in the date formats or values. System Configuration: There may be configuration settings that enforce date validation rules, leading to this error if not adhered to.
Solution: Check Dates: Review the requirement entry and ensure that the start date is earlier than or equal to the end
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