Message type: E = Error
Message class:  V4 - Nachrichten Verkauf (Variable Meldungen und EDI-Meldungen) 
Message number: 225
Message text: Schedule line number missing when you changed the schedule line
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The SAP error message V4225 ("Schedule line number missing") typically occurs in the context of sales order processing when there is an issue with the schedule line data. This error can arise when you attempt to change a schedule line in a sales order, but the system cannot find the corresponding schedule line number.
Causes:
Missing Schedule Line Number: The most direct cause is that the schedule line number is not specified or is missing in the transaction you are trying to execute.
Data Inconsistency: There may be inconsistencies in the sales order data, such as missing or incorrect entries in the schedule line details.
Incorrect Configuration: The configuration settings for the sales order processing might not be set up correctly, leading to issues when trying to modify schedule lines.
User Authorization: The user may not have the necessary permissions to modify schedule lines, which can lead to errors when attempting to make changes.
Solutions:
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