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

CNMM002 - Overview

• 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.

CNMM002 - Details

• 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