How To Fix /SCTM/TMMD_UI404 - Calendar &1 is already assigned to a different supply chain unit

SAP Error Message - Details

• Message type: E = Error

• Message class: /SCTM/TMMD_UI -

• Message number: 404

• Message text: Calendar &1 is already assigned to a different supply chain 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.

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Smart SAP Assistant

• What is the cause and solution for SAP error message /SCTM/TMMD_UI404 - Calendar &1 is already assigned to a different supply chain unit ?

  The SAP error message /SCTM/TMMD_UI404 Calendar &1 is already assigned to a different supply chain unit typically occurs in the context of SAP Supply Chain Management (SCM) when you are trying to assign a calendar to a supply chain unit that is already linked to another supply chain unit. This can happen during configuration or when trying to set up planning or scheduling parameters.
  Cause:
  
  Calendar Assignment Conflict: The calendar you are trying to assign (denoted by &1 in the error message) is already associated with another supply chain unit. In SAP SCM, each supply chain unit can only have one calendar assigned to it at a time.
  Configuration Error: There may be a misconfiguration in the supply chain unit settings or in the calendar settings.
  Data Integrity Issues: There could be issues with the data integrity in the system, such as duplicate entries or incorrect references.
  
  Solution:
  
  
  Check Current Assignments:
  
  Go to the relevant transaction or configuration area in SAP where you can view the current assignments of calendars to supply chain units.
  Identify which supply chain unit is currently using the calendar in question.
  
  
  
  Reassign the Calendar:
  
  If you need to use the calendar for a different supply chain unit, you will need to first unassign it from the current unit. This can usually be done in the configuration settings for the supply chain unit.
  After unassigning, you can then assign the calendar to the desired supply chain unit.
  
  
  
  Create a New Calendar:
  
  If the calendar is critical for both supply chain units, consider creating a new calendar that can be assigned to the second unit instead of trying to reassign the existing one.
  
  
  
  Review Configuration Settings:
  
  Ensure that the configuration settings for both the supply chain units and the calendars are correct and do not have any conflicts.
  
  
  
  Consult Documentation:
  
  Refer to SAP documentation or help resources for specific steps on managing calendars and supply chain units in your version of SAP SCM.
  
  
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as /SCMTMS/SCU for managing supply chain units or /SCMTMS/CALENDAR for calendar management.
  SAP Notes: Check SAP Notes for any known issues or patches related to this error message.
  User Roles and Authorizations: Ensure that you have the necessary authorizations to make changes to supply chain unit configurations and calendar assignments.
  
  If the issue persists after following these steps, it may be beneficial to consult with your SAP support team or a technical consultant who specializes in SAP SCM for further assistance.