How To Fix C+255 - Material &1 in period &3 already exists for currency type &4

SAP Error Message - Details

• Message type: E = Error

• Message class: C+ -

• Message number: 255

• Message text: Material &1 in period &3 already exists for currency type &4

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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Smart SAP Assistant

• What is the cause and solution for SAP error message C+255 - Material &1 in period &3 already exists for currency type &4 ?

  The SAP error message C+255 indicates that there is a duplicate entry for a material in a specific period for a given currency type. This typically occurs in the context of material valuation or inventory management, where the system is trying to post a new valuation or inventory record that conflicts with an existing one.
  Cause:
  
  
  Duplicate Entries: The error arises when there is already a record for the specified material in the specified period and currency type. This can happen if:
  
  A previous posting was made for the same material and period.
  There was an attempt to post a new valuation or inventory record that overlaps with an existing one.
  
  
  
  Incorrect Data Entry: Sometimes, this can be due to incorrect data entry or configuration issues in the material master or valuation settings.
  
  
  Timing Issues: If multiple users are trying to post data for the same material and period simultaneously, it can lead to conflicts.
  
  
  Solution:
  
  
  Check Existing Records: 
  
  Use transaction codes like MM03 (Display Material) or MB51 (Material Document List) to check if there is already an entry for the material in the specified period and currency type.
  Review the existing records to understand why the new entry cannot be posted.
  
  
  
  Adjust Posting Period: 
  
  If the posting is not urgent, consider adjusting the posting period to a future date where no conflicts exist.
  
  
  
  Correct Data Entry: 
  
  Ensure that the data being entered is correct and does not duplicate existing records. Validate the material number, period, and currency type.
  
  
  
  Consult with Colleagues: 
  
  If multiple users are involved, coordinate with them to ensure that no one else is trying to post the same data.
  
  
  
  System Configuration: 
  
  If this issue is recurring, it may be worth reviewing the configuration settings for material valuation and currency types to ensure they are set up correctly.
  
  
  
  SAP Notes and Support: 
  
  Check for any relevant SAP Notes that might address this specific error or provide additional guidance.
  If the issue persists, consider reaching out to SAP support for further assistance.
  
  
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as:
  
  MM03: Display Material Master
  MB51: Material Document List
  MB1A: Goods Withdrawal
  MIGO: Goods Movement
  
  
  Material Valuation: Understand how material valuation works in SAP, including the different currency types and how they are managed.
  Posting Periods: Be aware of how posting periods are defined and managed in your SAP system, as this can affect material postings.
  
  By following these steps, you should be able to resolve the C+255 error and prevent it from occurring in the future.