How To Fix M2101 - Enter period in the format __/YYYY

SAP Error Message - Details

• Message type: E = Error

• Message class: M2 - LIS: Generating and updating info structures

• Message number: 101

• Message text: Enter period in the format __/YYYY

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message M2101 - Enter period in the format __/YYYY ?

  The SAP error message M2101, which states "Enter period in the format __/YYYY," typically occurs when a user is trying to enter a period in a transaction or report, and the format of the period is incorrect. This error is common in modules that deal with financial data, such as Materials Management (MM) or Financial Accounting (FI).
  Cause:
  The error is caused by the user entering a period in an incorrect format. SAP expects the period to be entered in a specific format, which is usually "MM/YYYY" (month/year). If the user enters the period in a different format (e.g., "YYYY/MM" or "MM-YYYY"), SAP will not recognize it and will throw this error.
  Solution:
  To resolve the M2101 error, follow these steps:
  
  
  Check the Format: Ensure that you are entering the period in the correct format, which is "MM/YYYY". For example, if you want to enter March 2023, you should enter "03/2023".
  
  
  Use Leading Zeros: Make sure to use leading zeros for single-digit months. For instance, January should be entered as "01" and not "1".
  
  
  Review Input Fields: Double-check the input fields where you are entering the period. Sometimes, the error may occur if the field is not intended for date input.
  
  
  Consult Documentation: If you are unsure about the required format or if there are specific configurations in your SAP system, consult the relevant SAP documentation or your organization's SAP support team.
  
  
  Check User Settings: Sometimes, user-specific settings or regional settings in SAP can affect date formats. Ensure that your user profile settings are correctly configured.
  
  
  Related Information:
  
  SAP Notes: Check SAP Notes for any known issues or updates related to this error message.
  Transaction Codes: The error may occur in various transaction codes, such as MIGO, MB1A, or others related to inventory management and financial postings.
  User Training: If this error is common among users, consider providing training on the correct data entry formats in SAP.
  
  By following these steps, you should be able to resolve the M2101 error and successfully enter the required period in SAP.