How To Fix CY121 - Please enter the posting period using the format "YYYYPPP"

SAP Error Message - Details

• Message type: E = Error

• Message class: CY - Capacity Requirements Planning

• Message number: 121

• Message text: Please enter the posting period using the format "YYYYPPP"

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message CY121 - Please enter the posting period using the format "YYYYPPP" ?

  The SAP error message CY121, which states "Please enter the posting period using the format 'YYYYPPP'," typically occurs when a user is trying to enter a posting period in a format that SAP does not recognize. The expected format for the posting period is a four-digit year followed by a three-digit period number (e.g., "202301" for January 2023).
  Cause:
  
  Incorrect Format: The user may have entered the posting period in an incorrect format, such as using slashes, dashes, or not following the "YYYYPPP" structure.
  Invalid Period: The period entered may not exist in the system, or it may be closed for posting.
  User Input Error: The user may have mistakenly entered letters or special characters instead of numbers.
  
  Solution:
  
  Check Format: Ensure that the posting period is entered in the correct format: "YYYYPPP". For example, for March 2023, you should enter "202303".
  Verify Period Validity: Check if the period you are trying to enter is valid and open for posting. You can do this by navigating to the relevant configuration settings in SAP.
  Correct Input: If you have mistakenly entered the wrong characters, correct the input to match the required format.
  Consult Documentation: If you are unsure about the correct posting periods, refer to your organization's SAP documentation or consult with your SAP administrator.
  
  Related Information:
  
  Transaction Codes: This error can occur in various transaction codes where posting periods are required, such as FB01 (Post Document), F-02 (General Posting), etc.
  Configuration: The posting periods are usually defined in the Financial Accounting (FI) module. You can check the configuration settings under the path: SPRO > Financial Accounting > Financial Accounting Global Settings > Periodic Processing > Open and Close Posting Periods.
  User Roles: Ensure that the user has the necessary permissions to post in the specified period.
  
  If the issue persists after checking the above points, it may be beneficial to consult with your SAP support team for further assistance.