How To Fix 1F609 - Creation not possible as start date is before posting date

SAP Error Message - Details

• Message type: E = Error

• Message class: 1F - BKK: Beziehungen

• Message number: 609

• Message text: Creation not possible as start date is before posting date

What causes this issue?

Hierarchies for interest compensation can only be created in the
future, meaning that the start date must be at least one day after the
current posting date.
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System Response

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

How to fix this error?

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message 1F609 - Creation not possible as start date is before posting date ?

  The SAP error message 1F609 indicates that a creation or posting action cannot be completed because the start date of the transaction is set before the current posting date. This typically occurs in various SAP modules, such as SAP Controlling (CO) or SAP Project System (PS), where date validations are enforced to ensure that transactions are recorded within the appropriate accounting periods.
  Cause:
  
  Date Configuration: The start date of the transaction (e.g., a project, order, or activity) is earlier than the current posting date set in the system.
  Posting Period: The system may have restrictions on posting to certain periods, and the date you are trying to use falls outside of the allowed range.
  System Settings: The configuration settings in the SAP system may restrict transactions from being created with dates that precede the current posting date.
  
  Solution:
  
  Adjust the Start Date: Change the start date of the transaction to a date that is equal to or later than the current posting date.
  Check Posting Periods: Ensure that the posting period is open for the date you are trying to use. You can check this in the transaction code OB52 (for controlling) or OB29 (for financial accounting) to see if the period is open.
  Review System Settings: If you have the necessary authorizations, review the configuration settings related to date validations in the relevant modules. This may involve consulting with your SAP Basis or configuration team.
  Consult Documentation: Refer to SAP documentation or help resources for specific guidelines on date handling in the module you are working with.
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as CJ20N (Project Builder), KO01 (Create Order), or others depending on the context of the error.
  User Authorizations: Ensure that you have the necessary authorizations to make changes to dates or posting periods.
  SAP Notes: Check for any SAP Notes related to this error message for additional insights or patches that may address the issue.
  Testing: If you are in a development or testing environment, try replicating the issue with different dates to understand the constraints better.
  
  If the issue persists after trying the above solutions, it may be beneficial to consult with your SAP support team or a functional consultant who specializes in the relevant module.