How To Fix 6D154 - The valid-from date was not the start of the period of the master SU

SAP Error Message - Details

• Message type: E = Error

• Message class: 6D - Real Estate Messages

• Message number: 154

• Message text: The valid-from date was not the start of the period of the master SU

What causes this issue?

You want to assign participating settlement units on &v1&. However,
this valid-from date is not the period start of the current master
settlement unit since it has the settlement variant &v2&. One example
of a valid period start date is &v3&.

How to fix this error?

Enter a valid-from date for the assignment of other participating
settlement units that is also the start of the settlement period for
the master settlement unit. You can only make an assignment for the
period start date of the settlement variant.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message 6D154 - The valid-from date was not the start of the period of the master SU ?

  The SAP error message 6D154 indicates that there is an issue with the "valid-from" date of a master stock unit (SU) not aligning with the start of the period defined for that master stock unit. This typically occurs in the context of managing stock and inventory in SAP, particularly when dealing with stock units that have specific validity periods.
  Cause:
  
  Date Mismatch: The "valid-from" date you are trying to enter does not match the start date of the defined period for the master stock unit. This could happen if you are trying to create or modify a stock unit with a date that falls outside the allowed range.
  Master Data Configuration: The master data for the stock unit may not be configured correctly, leading to inconsistencies in the date settings.
  Period Settings: The period settings for the stock unit may not be properly defined, causing the system to reject dates that do not align with the expected periods.
  
  Solution:
  
  Check Valid-From Date: Ensure that the "valid-from" date you are entering is the same as the start date of the period defined for the master stock unit. If it is not, adjust the date accordingly.
  Review Master Data: Go to the master data of the stock unit and verify the period settings. Make sure that the periods are correctly defined and that the "valid-from" date aligns with these settings.
  Adjust Period Settings: If necessary, adjust the period settings in the master data to ensure that the "valid-from" date can be accepted.
  Consult Documentation: Refer to SAP documentation or help resources for specific guidance on managing stock units and their validity periods.
  
  Related Information:
  
  Transaction Codes: You may need to use transaction codes such as MM02 (Change Material) or MM03 (Display Material) to access and modify the master data for the stock unit.
  SAP Notes: Check for any relevant SAP Notes that may address this specific error or provide additional troubleshooting steps.
  User Permissions: Ensure that you have the necessary permissions to make changes to the master data, as restrictions may prevent you from updating the "valid-from" date.
  
  If the issue persists after following these steps, it may be beneficial to consult with your SAP support team or a functional consultant who specializes in inventory management within SAP.