How To Fix MA859 - Period unit 'day' is used as planning period unit

SAP Error Message - Details

• Message type: E = Error

• Message class: MA - Sales and Operations Planning

• Message number: 859

• Message text: Period unit 'day' is used as planning period unit

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.

What else can you do?

First, use our AnswerBot below to get a possible cause and solution (requires a premium subscription).

Also, review the in-depth Common Questions & Answers listed below; you could discover a solution there or be able to connect with others who have faced similar challenges.

You can also try searching the SAP support portal (support.sap.com) but you need a special user ID to access it. It is possible that an SAP support note exists that provides additional details about the mistake or even steps for fixing it.

Smart SAP Assistant

• What is the cause and solution for SAP error message MA859 - Period unit 'day' is used as planning period unit ?

  The SAP error message MA859 indicates that there is an issue with the planning period unit being set to 'day' in a context where it is not allowed or not appropriate. This error typically arises in the context of Material Requirements Planning (MRP) or other planning-related transactions in SAP.
  Cause:
  
  Incorrect Configuration: The planning period unit is set to 'day' in a configuration that expects a different unit (e.g., weeks, months).
  Master Data Issues: The material master or planning parameters may have been incorrectly set, leading to a mismatch in expected units.
  Planning Strategy: The planning strategy being used may not support daily planning, which can lead to this error.
  
  Solution:
  
  
  Check Configuration:
  
  Go to the configuration settings for MRP or the relevant planning area.
  Verify the settings for planning period units and ensure that 'day' is an acceptable unit for the current configuration.
  
  
  
  Review Material Master Data:
  
  Access the material master data for the affected materials.
  Check the planning views and ensure that the planning period unit is set correctly.
  If necessary, change the planning period unit to a supported value (e.g., weeks or months).
  
  
  
  Adjust Planning Strategy:
  
  Review the planning strategy assigned to the material.
  If the strategy does not support daily planning, consider changing it to one that does or adjusting the planning parameters accordingly.
  
  
  
  Consult Documentation:
  
  Refer to SAP documentation or help resources for specific details on planning period units and their configurations.
  
  
  
  Testing:
  
  After making changes, run a test planning run to ensure that the error is resolved and that the planning process works as expected.
  
  
  
  Related Information:
  
  Transaction Codes: You may need to use transaction codes like MM02 (Change Material), MD01 (MRP Run), or SPRO (Customizing) to access the relevant settings.
  SAP Notes: Check for any SAP Notes related to this error message for additional guidance or patches that may address the issue.
  User Forums: Consider visiting SAP community forums or user groups for insights from other users who may have encountered similar issues.
  
  By following these steps, you should be able to identify the root cause of the MA859 error and implement a solution to resolve it.