How To Fix F4090 - Unknown identification: & &

F4090 - Overview

• Message type: E = Error

• Message class: F4 - Line items/balances/configuration

• Message number: 090

• Message text: Unknown identification: & &

What causes this issue?

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

System Response

How to fix this error?

Contact SAP - possible program error.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message F4090 - Unknown identification: & & ?

  The SAP error message F4090, which states "Unknown identification: & &", typically occurs in the context of financial transactions or when dealing with master data in SAP. This error indicates that the system is unable to recognize a specific identification or reference that has been entered.
  Causes:
  
  Incorrect Input: The most common cause is that the user has entered an incorrect or invalid identification number (such as a vendor, customer, or account number).
  Missing Master Data: The identification may not exist in the system. For example, if you are trying to reference a vendor that has not been created or has been deleted.
  Data Synchronization Issues: If there are issues with data synchronization between different modules or systems, it may lead to this error.
  Authorization Issues: Sometimes, the user may not have the necessary authorizations to view or access the identification in question.
  
  Solutions:
  
  Verify Input: Double-check the identification number you have entered for any typos or