How To Fix MPLAN026 - Field & cannot be filled -> value reset

MPLAN026 - Overview

• Message type: E = Error

• Message class: MPLAN - Messages for Maintenance Plan API

• Message number: 026

• Message text: Field & cannot be filled -> value reset

Self-Explanatory Message

Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.

To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

Unfortunately, there isn't any extra information in this error notice.

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Smart SAP Assistant

• What is the cause and solution for SAP error message MPLAN026 - Field & cannot be filled -> value reset ?

  The SAP error message MPLAN026 indicates that a specific field cannot be filled, and as a result, its value is reset. This error typically occurs in the context of Material Planning (MP) or Production Planning (PP) modules when there is an issue with the data being processed.
  
  Cause:
  The error can be caused by several factors, including:
  
  
  Missing or Incorrect Data: The field in question may require certain data that is either missing or incorrectly formatted. This could be related to master data (like material master, BOM, routing) or planning parameters.
  
  
  
  Configuration Issues: There may be configuration settings in the system that prevent the field from being filled. This could be due to settings in the planning strategy, MRP type, or other related configurations.
  
  
  Data Inconsistencies: Inconsistencies in the data, such as mismatched units of measure or incompatible settings between different master data records, can lead to this error.
  
  
  User Authorizations: Sometimes, the user may not