How To Fix G3102 - Year/period for document &1/sub-document &2 in ledger &3 not unique

SAP Error Message - Details

• Message type: E = Error

• Message class: G3 - Messages for SAP Consolidation: Integration

• Message number: 102

• Message text: Year/period for document &1/sub-document &2 in ledger &3 not unique

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.

What else can you do?

First, use our AnswerBot below to get a possible cause and solution (requires a premium subscription).

Also, review the in-depth Common Questions & Answers listed below; you could discover a solution there or be able to connect with others who have faced similar challenges.

You can also try searching the SAP support portal (support.sap.com) but you need a special user ID to access it. It is possible that an SAP support note exists that provides additional details about the mistake or even steps for fixing it.

Smart SAP Assistant

• What is the cause and solution for SAP error message G3102 - Year/period for document &1/sub-document &2 in ledger &3 not unique ?

  The SAP error message G3102 indicates that there is a problem with the uniqueness of a document in a specific ledger for a given year and period. This error typically arises when there are multiple entries for the same document number in the same period and ledger, which violates the uniqueness constraint that SAP enforces for financial documents.
  Cause:
  
  Duplicate Document Entries: The most common cause of this error is that there are duplicate entries for the same document number in the specified year, period, and ledger.
  Incorrect Document Number Assignment: There may be issues with how document numbers are assigned, especially if manual entries are involved.
  Configuration Issues: There could be configuration settings in the financial accounting module that are not set up correctly, leading to conflicts in document number assignment.
  Data Migration Issues: If data has been migrated from another system, it’s possible that duplicate documents were imported.
  
  Solution:
  
  
  Check for Duplicates: 
  
  Use transaction codes like FB03 (Display Document) or FBL1N (Vendor Line Item Display) to check if there are duplicate entries for the specified document number in the specified period and ledger.
  If duplicates are found, you may need to delete or adjust the duplicate entries.
  
  
  
  Review Document Number Ranges:
  
  Check the configuration of document number ranges in SPRO (Customizing) under Financial Accounting. Ensure that the number ranges are set up correctly and that there are no overlaps.
  
  
  
  Adjust Document Numbering:
  
  If manual document entry is being used, ensure that users are following the correct procedures to avoid duplicate entries.
  
  
  
  Data Cleanup:
  
  If the issue arose from data migration, consider performing a data cleanup to remove or correct duplicate entries.
  
  
  
  Consult SAP Notes:
  
  Check the SAP Support Portal for any relevant SAP Notes that may address this specific error or provide additional guidance.
  
  
  
  Contact SAP Support:
  
  If the issue persists and cannot be resolved through the above steps, consider reaching out to SAP Support for further assistance.
  
  
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with transaction codes like FB03, FB02 (Change Document), and FBL1N for managing and reviewing financial documents.
  Document Types: Understand the different document types and their configurations in your SAP system, as this can affect how documents are processed and stored.
  User Training: Ensure that users involved in financial transactions are adequately trained on the importance of unique document numbers and the procedures to follow to avoid duplicates.
  
  By following these steps, you should be able to identify the cause of the G3102 error and implement a solution to resolve it.