Message type: E = Error
Message class:  WUE - Messages in package WAKT_ADD_ON 
Message number: 001
Message text: Plant &1, article &2 &3: the percentage of delivery phases <> 100
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The SAP error message WUE001 indicates that there is an issue with the delivery phases for a specific plant and article combination. The message states that the total percentage of delivery phases does not equal 100%. This can occur in various scenarios, particularly in the context of sales and distribution (SD) or materials management (MM) when dealing with delivery schedules or planned deliveries.
Cause: Incorrect Delivery Phase Configuration: The delivery phases may not be configured correctly in the system. Each delivery phase should have a defined percentage that contributes to a total of 100%. Incomplete Data Entry: During the creation or modification of delivery schedules, the percentages for the delivery phases may not have been entered correctly or completely. Changes in Delivery Schedule: If there have been recent changes to the delivery schedule, such as adding or removing phases, the total percentage may not have been recalculated or updated. Custom Logic or User Exits: If
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