How To Fix F4392 - Field & ( & ) is a special field -> see long text

F4392 - Overview

• Message type: E = Error

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

• Message number: 392

• Message text: Field & ( & ) is a special field -> see long text

What causes this issue?

The requested function is not possible for field &V1& since the content
of this field is only temporarily known and is not saved in the system.

System Response

The requested function cannot be carried out.

How to fix this error?

You can stipulate which special fields you want to be internally
available on a permanent basis by carrying out the following activity
in the Implementation Guide for Financial Accounting: <LS>Accounts
Receivable and Accounts Payable -> Customer Accounts -> Line Items ->
Customer Line Item Display -> Define Special Fields for
Selecting/Finding/Sorting Data</>. This is possible for all document
fields which are not included in structure <LS>RFPOS</>.
This results in an increase of internally held data however, since the
special fields for each line item in the list are stored internally.

Error message extract from SAP system. Copyright SAP SE.

F4392 - Details

• The SAP error message F4392 indicates that there is an issue with a specific field in a financial transaction or document. The message states that the field in question is a "special field," which typically means that it has specific requirements or constraints that must be met for the transaction to be processed correctly.
  
  Cause:
  
  Incorrect Field Input: The field may have been filled out incorrectly or with invalid data. This could include entering a value that is not allowed for that field.
  Field Configuration: The field may be configured in a way that it requires certain conditions to be met before it can be used.
  Missing Data: Required data for the special field may be missing, leading to the error.
  Authorization Issues: The user may not have the necessary permissions to enter data into the special field.
  
  
  Solution:
  
  Check Field Requirements: Review the long text associated with the error message to understand the specific requirements for