How To Fix 1F521 - Simulation run for &1 hierarchies

1F521 - Overview

• Message type: E = Error

• Message class: 1F - BKK: Beziehungen

• Message number: 521

• Message text: Simulation run for &1 hierarchies

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 1F521 - Simulation run for &1 hierarchies ?

  The SAP error message 1F521 typically occurs during a simulation run for hierarchies in the context of SAP BW (Business Warehouse) or SAP BI (Business Intelligence). This error indicates that there is an issue with the hierarchy data or the configuration of the hierarchy itself.
  
  Cause:
  The error message 1F521 can be triggered by several factors, including:
  
  Missing Hierarchy Nodes: The hierarchy may reference nodes that do not exist or are not properly defined.
  Incorrect Hierarchy Structure: The hierarchy structure may be incorrect, such as circular references or invalid parent-child relationships.
  Data Inconsistencies: There may be inconsistencies in the data that the hierarchy is based on, such as missing or incorrect attributes.
  Authorization Issues: The user may not have the necessary authorizations to access the hierarchy or perform the simulation.
  Technical Issues: There could be technical issues with the SAP system, such as database inconsistencies or system configuration problems.
  
  
  Solution:
  To resolve the error message 1F521, you can take