How To Fix EM261 - Item number &1 exists twice. Check the sequence

EM261 - Overview

• Message type: E = Error

• Message class: EM - IS-U Migration

• Message number: 261

• Message text: Item number &1 exists twice. Check the sequence

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.

Unfortunately, there isn't any extra information in this error notice.

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Smart SAP Assistant

• What is the cause and solution for SAP error message EM261 - Item number &1 exists twice. Check the sequence ?

  The SAP error message EM261 ("Item number &1 exists twice. Check the sequence") typically occurs in the context of document processing, such as when creating or modifying purchase orders, sales orders, or other transactional documents. This error indicates that there are duplicate item numbers in the document, which violates the requirement for unique item identifiers.
  
  Cause:
  
  Duplicate Item Entries: The most common cause of this error is that the same item number has been entered more than once in the document.
  Incorrect Sequence: The item numbers may not be in the expected sequence, which can happen if items are added or removed in a non-sequential manner.
  Data Entry Errors: Manual data entry mistakes can lead to unintentional duplication of item numbers.
  Copying Documents: If a document is copied from another document that contains duplicate items, the same issue can arise.
  
  
  Solution:
  
  Check Item Numbers: Review the item numbers in the document to identify any duplicates. Ensure that