How To Fix /SAPAPO/CFM_MSG155 - Invalid interface

SAP Error Message - Details

• Message type: E = Error

• Message class: /SAPAPO/CFM_MSG -

• Message number: 155

• Message text: Invalid interface

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 /SAPAPO/CFM_MSG155 - Invalid interface ?

  The SAP error message /SAPAPO/CFM_MSG155 Invalid interface typically occurs in the context of SAP Advanced Planning and Optimization (APO), particularly when dealing with the CIF (Core Interface) between SAP APO and SAP ERP systems. This error indicates that there is an issue with the interface configuration or the data being transferred between the systems.
  Causes:
  
  Incorrect Configuration: The CIF interface may not be properly configured. This could include incorrect settings in the CIF model or missing master data.
  Data Issues: There may be inconsistencies or invalid data in the master data being transferred, such as invalid material numbers, plant codes, or other key fields.
  Version Mismatch: There could be a version mismatch between the SAP ERP and SAP APO systems, leading to incompatibility in the data structures.
  Authorization Issues: The user or system may not have the necessary authorizations to access or process the data being transferred.
  Network Issues: Connectivity problems between the SAP ERP and SAP APO systems can also lead to this error.
  
  Solutions:
  
  Check CIF Configuration: Review the CIF configuration settings in both the SAP ERP and SAP APO systems. Ensure that the necessary master data is correctly set up and that the CIF model is active.
  Validate Master Data: Check the master data in the SAP ERP system for any inconsistencies or errors. Ensure that all required fields are populated and that the data is valid.
  Review Logs: Look at the CIF logs for more detailed error messages. This can provide insights into what specifically is causing the issue.
  Check Authorizations: Ensure that the user or system has the necessary authorizations to perform the CIF operations. This may involve checking roles and permissions in both systems.
  Test Connectivity: Verify that there are no network issues between the SAP ERP and SAP APO systems. This can include checking firewalls, network settings, and ensuring that both systems can communicate effectively.
  Consult SAP Notes: Check the SAP Support Portal for any relevant SAP Notes that may address this specific error message or provide additional troubleshooting steps.
  
  Related Information:
  
  CIF Documentation: Review the official SAP documentation on CIF for detailed information on configuration and troubleshooting.
  SAP Community: Engage with the SAP Community forums to see if other users have encountered similar issues and what solutions they found effective.
  SAP Support: If the issue persists, consider reaching out to SAP Support for assistance, especially if you have a support contract.
  
  By following these steps, you should be able to identify and resolve the cause of the /SAPAPO/CFM_MSG155 Invalid interface error in your SAP environment.