How To Fix 26002 - Document already exists

SAP Error Message - Details

• Message type: E = Error

• Message class: 26 - Dokumentenverwaltung

• Message number: 002

• Message text: Document already exists

What causes this issue?

You want to create a document.
A document already exists with the data you entered for document
number, document type, document part and document version.

How to fix this error?

Check your entries.
If your entries are correct, display the document so that you can check
the data.
You may want to create a new version.
To do this, choose <ZH>Document -> New version</>.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message 26002 - Document already exists ?

  The SAP error message 26002, which states "Document already exists," typically occurs when you attempt to create a document (such as a purchase order, invoice, or other transactional document) that has a unique identifier (like a document number) that already exists in the system. This can happen in various SAP modules, including MM (Materials Management), SD (Sales and Distribution), and FI (Financial Accounting).
  Causes:
  
  Duplicate Document Number: The most common cause is that the document number you are trying to use is already assigned to another document in the system.
  Incorrect Document Type: You may be using the wrong document type that has a different number range or is not allowed for the transaction you are trying to perform.
  System Configuration: The number range configuration for the document type may not be set up correctly, leading to conflicts.
  User Error: The user may have inadvertently tried to create a document with the same number as an existing one.
  
  Solutions:
  
  Check Existing Documents: Verify if the document number you are trying to use already exists. You can do this by searching for the document in the relevant transaction (e.g., ME23N for purchase orders).
  Use a Different Document Number: If the document number is already in use, try using a different number that is not currently assigned.
  Review Number Range Configuration: Check the configuration of the number ranges for the document type in the SAP Customizing Implementation Guide (IMG). Ensure that the number ranges are set up correctly and that there are no overlaps.
  Consult with Your SAP Administrator: If you are unsure about the configuration or how to resolve the issue, consult with your SAP administrator or support team for assistance.
  Check for Background Jobs: Sometimes, background jobs or processes may create documents that you are unaware of. Check if there are any background jobs that might be creating documents with the same number.
  
  Related Information:
  
  Transaction Codes: Depending on the module, you may use different transaction codes to check existing documents (e.g., ME23N for purchase orders, FB03 for financial documents).
  SAP Notes: Check SAP Notes for any known issues or patches related to this error message. SAP Notes can provide additional context or solutions.
  Documentation: Review SAP documentation related to document management and number range configuration for more detailed guidance.
  
  If the issue persists after trying the above solutions, it may be necessary to escalate the problem to SAP support for further investigation.