How To Fix WRF_FOLUPART046 - &: Two-level cycle exists

WRF_FOLUPART046 - Overview

• Message type: E = Error

• Message class: WRF_FOLUPART - Follow-Up/Replacement Material

• Message number: 046

• Message text: &: Two-level cycle exists

What causes this issue?

You defined in Customizing that the system runs a check for two-level
cycles for the follow-up type of a follow-up/replacement material
relationship. The system detected a two-level cylcle when creating the
follow-up relationship.
A two-level cycle exists when the follow-up/replacement material of a
follow-up/replacement material relationship is the original material in
a second follow-up/replacement material relationship, and the
follow-up/replacement material in this second follow-up/replacement
material relationship is the original material of the first. In
addition, both relationships have to have the same follow-up type
number.
Example A
Follow-up/repl. mat. rel. 1,,Original material:,,,,1000
,,Follow-up/repl. mat.:,,,,2000
,,Follow-up type no.:,,,,01
Follow-up/repl. mat. rel. 2,,Original material:,,,,2000
,,Follow-up/repl. mat.:,,,,1000
,,Follow-up type no.:,,,,01
-> Two-level cycle
Example B
Follow-up/repl. mat. rel. 1,,Original material:,,,,1000
,,Follow-up/repl. mat.:,,,,2000
,,Follow-up type no.:,,,,01
Follow-up/repl. mat. rel. 2,,Original material:,,,,2000
,,Follow-up/repl. mat.:,,,,1000
,,Follow-up type no.:,,,,02
-> Not a two-level cycle
Example C
Follow-up/repl. mat. rel. 1,,Original material:,,,,1000
,,Follow-up/repl. mat.:,,,,2000
,,Follow-up type no.: ,,,,01
Follow-up/repl. mat. rel. 2,,Original material:,,,,2000
,,Follow-up/repl. mat.:,,,,3000
,,Follow-up type no.:,,,,01
-> Not a two-level cycle
You defined in Customizing that the system should display a warning
message or error message when a two-level cycle 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?

If the system displays a warning message, you can leave the
follow-up/relationship material relationship unchanged. The system saves
the relationship.
If the system displays an error message, you have to change the original
material and/or the follow-up/replacement material. The system does not
save the relationship.
Alternatively, you can also create the follow-up/replacement material
relationship for a different follow-up type number.

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.

WRF_FOLUPART046 - Details

• The SAP error message WRF_FOLUPART046, which indicates that "Two-level cycle exists," typically arises in the context of product hierarchy or material master data management within the SAP system, particularly in the SAP Advanced Planning and Optimization (APO) module or in the SAP S/4HANA environment.
  
  Cause:
  This error usually occurs when there is a circular dependency in the product hierarchy or in the way that products are related to each other. Specifically, it can happen when:
  
  Hierarchical Structure Issues: There are two or more products that reference each other in a way that creates a loop. For example, Product A is a component of Product B, and Product B is also a component of Product A.
  Incorrect Configuration: The configuration of the product hierarchy or the way that materials are set up in the system may not adhere to the required structure, leading to cycles.
  Data Integrity Issues: There may be inconsistencies or errors in the