How To Fix MA851 - This function is not possible in combination with period unit "Day"

MA851 - Overview

• Message type: E = Error

• Message class: MA - Sales and Operations Planning

• Message number: 851

• Message text: This function is not possible in combination with period unit "Day"

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 MA851 - This function is not possible in combination with period unit "Day" ?

  The SAP error message MA851, which states "This function is not possible in combination with period unit 'Day'," typically occurs in the context of Material Management (MM) or Production Planning (PP) when trying to perform a function that is not compatible with the specified period unit of "Day." This error often arises in scenarios involving planning, scheduling, or reporting where the system expects a different period unit (like weeks or months) instead of days.
  
  Cause:
  
  Incompatible Period Unit: The function you are trying to execute is not designed to work with a daily period unit. For example, certain planning functions may require a weekly or monthly aggregation.
  Configuration Settings: The settings in the configuration for the planning or reporting module may not support daily periods for the specific function you are trying to use.
  Data Entry Error: There may be an error in the data entry where the period unit was incorrectly set to