How To Fix PM262 - Loops in the hierarchy structure not allowed

SAP Error Message - Details

• Message type: E = Error

• Message class: PM - Extended Payment Functions

• Message number: 262

• Message text: Loops in the hierarchy structure not allowed

What causes this issue?

Cash deconcentration occurs within one of the tables corresponding to
one of the header trees: One or more bank accounts have exactly one
superior clearing account. The same applies one level higher: One or
more clearing accounts have exactly one superior clearing account. The
target account is settled on the highest hierarchy level. It is
therefore the clearing account on the highest hierarchy level.
No loops are allowed within this structure as otherwise the algorithm
for the optimization of the account balances runs in an endless loop.
Optimization must always go from the bottom to the target account at
the top of the hierarchy specified.
In this case, such a loop was discovered in the hierarchy. The simplest
loop occurs when the bank account and the corresponding clearing
account are identical.

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?

Please check account table TTRCD and correct the incorrect entries!
<DS:TRAN.TRCD>Execute Function</>

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message PM262 - Loops in the hierarchy structure not allowed ?

  The SAP error message PM262, which states "Loops in the hierarchy structure not allowed," typically occurs in the context of SAP Plant Maintenance (PM) or SAP Project System (PS) when there is an issue with the hierarchical structure of objects, such as functional locations, equipment, or project structures. This error indicates that there is a circular reference in the hierarchy, which is not permissible in SAP.
  Cause:
  
  Circular References: The most common cause of this error is the presence of circular references in the hierarchy. For example, if Functional Location A is assigned to Functional Location B, and Functional Location B is assigned back to Functional Location A, this creates a loop.
  Incorrect Hierarchical Structure: The hierarchy may have been incorrectly defined, leading to loops that violate the structural integrity required by SAP.
  Data Migration Issues: If data has been migrated from another system, it may have introduced inconsistencies or loops in the hierarchy.
  
  Solution:
  
  Review Hierarchical Structure: Check the hierarchy of the objects involved (e.g., functional locations, equipment) to identify any circular references. You can use transaction codes like IL03 (Display Functional Location) or IH01 (Display Hierarchy) to visualize the structure.
  Correct the Structure: Once you identify the loops, you need to correct the hierarchy by removing the circular references. This may involve reassigning functional locations or equipment to ensure a proper tree structure.
  Use Hierarchy Tools: Utilize SAP tools or reports that can help identify and visualize the hierarchy structure. This can make it easier to spot and correct loops.
  Data Validation: If the issue arose from data migration, validate the data to ensure that it adheres to the required structure and does not contain any loops.
  Consult Documentation: Refer to SAP documentation or help resources for guidance on maintaining hierarchical structures in your specific SAP module.
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as IL01 (Create Functional Location), IL02 (Change Functional Location), and IL03 (Display Functional Location) for managing functional locations.
  SAP Notes: Check SAP Notes for any known issues or patches related to this error message. SAP Notes can provide additional insights or solutions.
  Training and Best Practices: Consider training for users involved in creating and managing hierarchical structures to prevent future occurrences of this error.
  
  By following these steps, you should be able to resolve the PM262 error and maintain a valid hierarchy structure in your SAP system.