How To Fix RSAN_RT752 - Error: Key value &1 is within a cycle

SAP Error Message - Details

• Message type: E = Error

• Message class: RSAN_RT - Messages for Runtime Analysis

• Message number: 752

• Message text: Error: Key value &1 is within a cycle

What causes this issue?

The hierarchy information within the data table contains errors. The
system has detected a cycle in which the node with key value
&SYST-MSGV1& occurs.
For the list, this cycle means that the node predecessor, the
predecessor of this node predecessor, and so on, all have this node as
the predecessor. Therefore, no hierarchy exists.

System Response

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

How to fix this error?

Correct the input data table.

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message RSAN_RT752 - Error: Key value &1 is within a cycle ?

  The SAP error message RSAN_RT752, which states "Key value &1 is within a cycle," typically occurs in the context of SAP BW (Business Warehouse) when dealing with data extraction or transformation processes. This error indicates that there is a cyclic dependency in the data flow or in the data model, which prevents the system from processing the data correctly.
  Cause:
  
  Cyclic Dependency: The most common cause of this error is a cyclic dependency in the data model. This can happen if a characteristic or key figure is defined in such a way that it refers back to itself or creates a loop in the data flow.
  Incorrect Data Flow Configuration: If the data flow is not configured correctly, it can lead to cycles in the extraction or transformation process.
  Hierarchical Structures: If you are using hierarchies in your data model, a cycle can occur if the hierarchy is not defined properly.
  
  Solution:
  
  Check Data Model: Review the data model to identify any cyclic dependencies. Look for characteristics or key figures that may be referencing themselves or creating a loop.
  Adjust Data Flow: Modify the data flow to eliminate any cycles. This may involve changing the way data is extracted or transformed.
  Review Hierarchies: If you are using hierarchies, ensure that they are defined correctly and do not create cycles.
  Use SAP Tools: Utilize SAP tools such as the Data Warehousing Workbench to analyze the data model and identify any issues.
  Testing: After making changes, test the data flow to ensure that the error is resolved and that data is being processed correctly.
  
  Related Information:
  
  SAP Notes: Check SAP Notes for any specific guidance or patches related to this error. SAP frequently updates its knowledge base with solutions for common issues.
  Documentation: Refer to SAP BW documentation for best practices in data modeling and flow configuration.
  Community Forums: Engage with SAP community forums or support channels for additional insights and solutions from other users who may have encountered the same issue.
  
  If the problem persists after trying the above solutions, it may be beneficial to consult with an SAP BW expert or reach out to SAP support for further assistance.