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

M2101 - Overview

• 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

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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M2101 - Details

• 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