How To Fix CNMM002 - Select an entry for the tab titles

SAP Error Message - Details

• Message type: E = Error

• Message class: CNMM - Project-Oriented Procurement

• Message number: 002

• Message text: Select an entry for the tab titles

What causes this issue?

You are selecting the tab index that is to be displayed.

System Response

You have not selected an entry. Calling the transaction without a tab
index is not allowed.

How to fix this error?

Select at least one tab index.

Procedure for System Administrators

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

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message CNMM002 - Select an entry for the tab titles ?

  The SAP error message CNMM002 ("Select an entry for the tab titles") typically occurs in the context of the SAP Project System (PS) module, particularly when working with project structures or when trying to access certain functionalities related to project management.
  Cause:
  The error message CNMM002 usually indicates that the system expects a selection or input for a specific field or tab that has not been provided. This can happen in various scenarios, such as:
  
  Missing Selection: You may not have selected a project or a specific entry in a list that is required for the operation you are trying to perform.
  Incomplete Data: The data required for the operation may not be fully populated, leading to the system not being able to proceed.
  User Interface Issue: Sometimes, the user interface may not display the expected entries due to a refresh issue or a temporary glitch.
  
  Solution:
  To resolve the CNMM002 error, you can try the following steps:
  
  Check Selections: Ensure that you have made the necessary selections in the relevant fields or tabs. Look for any dropdowns or lists that require an entry.
  Refresh the Screen: Sometimes, simply refreshing the screen or navigating away and back can resolve temporary glitches.
  Complete Required Fields: Make sure all mandatory fields are filled out correctly. Look for any indicators (like asterisks) that denote required fields.
  Review User Authorizations: Ensure that you have the necessary authorizations to access the data or perform the action you are attempting.
  Consult Documentation: If you are unsure about what needs to be selected, refer to the SAP documentation or help resources related to the specific transaction or module you are using.
  Contact Support: If the issue persists, consider reaching out to your SAP support team or consulting with an SAP expert who can provide more specific guidance based on your system configuration.
  
  Related Information:
  
  Transaction Codes: The error may occur in various transaction codes related to project management, such as CJ20N (Project Builder) or CJ01 (Create Work Breakdown Structure).
  SAP Notes: Check SAP Notes for any known issues or patches related to this error message. SAP frequently updates its knowledge base with solutions for common problems.
  User Forums: Consider visiting SAP community forums or user groups where similar issues may have been discussed, and solutions shared.
  
  By following these steps, you should be able to identify the cause of the CNMM002 error and take appropriate action to resolve it.