How To Fix F5581 - Enter a posting key first of all

F5581 - Overview

• Message type: E = Error

• Message class: F5 - Document Editing

• Message number: 581

• Message text: Enter a posting key first of all

What causes this issue?

The entry facility for the account number is initiated via matchcode
search. Separate matchcodes exist for every account type (customers,
vendors, G/L accounts, fixed assets). The matchcodes which are suitable
can in this case only be determined by means of the posting key.

System Response

The entry facility can only be supplied after entering the posting key.

How to fix this error?

Enter the required posting key before you use the possible entries
pushbutton for the account number.

Error message extract from SAP system. Copyright SAP SE.

F5581 - Details

• The SAP error message F5581 "Enter a posting key first of all" typically occurs in the context of financial transactions, particularly when you are trying to enter a document in the SAP system without specifying a posting key. The posting key is a crucial element in SAP's financial accounting module, as it determines the type of transaction being recorded (e.g., debit or credit) and the account type involved.
  
  Cause:
  
  Missing Posting Key: The most common cause of this error is that the user has not entered a posting key in the relevant field before attempting to process the transaction.
  Incorrect Screen Navigation: Sometimes, users may navigate to the transaction screen without properly following the required steps, leading to missing fields.
  User Authorization Issues: In some cases, the user may not have the necessary authorizations to perform the transaction, which can lead to incomplete data entry.
  
  
  Solution:
  
  Enter a Posting Key: The immediate solution is to ensure