How To Fix ORF1009 - Inversion with external model is not supported

SAP Error Message - Details

• Message type: E = Error

• Message class: ORF1 - Spare Parts Stock Calculation

• Message number: 009

• Message text: Inversion with external model is not supported

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 ORF1009 - Inversion with external model is not supported ?

  The SAP error message ORF1009, which states "Inversion with external model is not supported," typically occurs in the context of SAP's Advanced Planning and Optimization (APO) or Integrated Business Planning (IBP) modules. This error indicates that there is an attempt to perform an inversion operation using an external model, which is not supported by the system.
  Cause:
  
  Inversion Operation: The error arises when the system tries to perform an inversion (a mathematical operation that reverses the effect of a previous operation) on a model that is defined externally. Inversion is often used in planning scenarios to adjust or correct forecasts.
  External Model Limitation: The external model may be a third-party or custom model that does not support inversion operations as defined by SAP's internal logic.
  Configuration Issues: There may be configuration settings in the planning area or model that are not compatible with inversion operations.
  
  Solution:
  
  Review Model Configuration: Check the configuration of the external model to ensure it is set up correctly. If inversion is necessary, consider using an internal model that supports this operation.
  Modify Planning Logic: If inversion is not supported for the external model, you may need to adjust your planning logic to avoid the need for inversion. This could involve changing how data is processed or how forecasts are generated.
  Consult Documentation: Refer to SAP documentation for the specific version you are using to understand the limitations and capabilities of external models in relation to inversion operations.
  Contact SAP Support: If the issue persists and you cannot find a workaround, consider reaching out to SAP support for assistance. They may provide insights or patches that address the issue.
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that may address this specific error or provide updates regarding the functionality of external models.
  Community Forums: Engage with SAP community forums or user groups where similar issues may have been discussed. Other users may have encountered the same error and can share their solutions.
  Training and Documentation: Ensure that your team is trained on the capabilities and limitations of the models being used in your planning processes. Understanding the differences between internal and external models can help prevent such errors in the future.
  
  By addressing the configuration and understanding the limitations of the models in use, you can resolve the ORF1009 error and improve your planning processes in SAP.