How To Fix MSG_FLEXIBLE_HIER004 - Key &1 should not be empty

SAP Error Message - Details

• Message type: E = Error

• Message class: MSG_FLEXIBLE_HIER - Flexible Hierarchy message class

• Message number: 004

• Message text: Key &1 should not be empty

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 MSG_FLEXIBLE_HIER004 - Key &1 should not be empty ?

  The SAP error message MSG_FLEXIBLE_HIER004 with the description "Key &1 should not be empty" typically occurs in the context of flexible hierarchies, particularly when working with master data or when trying to create or modify a hierarchy structure in SAP.
  
  Cause:
  This error message indicates that a required key field (represented by &1) is empty or not populated when it is expected to have a value. This can happen in various scenarios, such as:
  
  Missing Data: The key field that is supposed to hold a unique identifier (like a cost center, profit center, or any other hierarchical key) is not filled in.
  Incorrect Configuration: The configuration of the hierarchy or the data model may not be set up correctly, leading to missing keys.
  Data Entry Error: During data entry, the user may have inadvertently left a required field blank.
  
  
  Solution:
  To resolve this error, you can take the following steps:
  
  
  Check Input Data: Ensure that all required fields,