How To Fix CN213 - Automatic number assignment not possible. Enter activity number

SAP Error Message - Details

• Message type: E = Error

• Message class: CN - Meldungen für Netzpläne

• Message number: 213

• Message text: Automatic number assignment not possible. Enter activity number

What causes this issue?

The system can no longer automatically assign number because the last
number in the interval has been reached.

System Response

INCLUDE 'NA_ALLG_NOVERARBEITUNG' OBJECT DOKU ID TX

How to fix this error?

Assign a different number for the activity. If the number has already
been assigned you will receive a message from the system.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message CN213 - Automatic number assignment not possible. Enter activity number ?

  The SAP error message CN213, which states "Automatic number assignment not possible. Enter activity number," typically occurs in the context of project management and controlling within SAP, particularly when dealing with network activities in Project System (PS) or when creating activities in a project.
  Cause:
  The error usually arises due to one of the following reasons:
  
  
  Number Range Issues: The number range for the activity type may not be defined or may be exhausted. This means that the system cannot automatically assign a new number to the activity because it has run out of available numbers.
  
  
  Configuration Settings: The configuration for automatic number assignment may not be set up correctly in the system. This could involve missing settings in the project profile or activity type.
  
  
  Authorization Issues: The user may not have the necessary authorizations to create or modify activities, which can prevent the automatic assignment of numbers.
  
  
  Project Status: The project or network may be in a status that does not allow for the creation of new activities.
  
  
  Solution:
  To resolve the CN213 error, you can take the following steps:
  
  
  Check Number Ranges:
  
  Go to transaction code SNRO (Number Range Objects).
  Check the number range object related to the activity type you are trying to create.
  Ensure that the number range is defined and that there are available numbers. If necessary, extend the number range.
  
  
  
  Review Configuration:
  
  Check the configuration settings for the project profile and activity type in transaction code OPRJ (Project Profile) and OIAF (Activity Type).
  Ensure that the automatic number assignment is correctly configured.
  
  
  
  User Authorizations:
  
  Verify that the user has the necessary authorizations to create activities. This can be checked with the help of your SAP security team.
  
  
  
  Project Status:
  
  Check the status of the project or network. Ensure that it is in a status that allows for the creation of new activities. You can do this by reviewing the project in transaction code CJ20N (Project Builder).
  
  
  
  Manual Entry:
  
  If automatic assignment is not possible, you can manually enter an activity number if you have the necessary permissions and if it is appropriate for your business process.
  
  
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as CJ20N (Project Builder), CJ01 (Create Work Breakdown Structure), and CJ02 (Change Work Breakdown Structure).
  Documentation: Review SAP documentation or help files related to Project System configuration and number range management.
  SAP Notes: Check for any relevant SAP Notes that may address specific issues related to the CN213 error.
  
  If the issue persists after following these steps, it may be beneficial to consult with your SAP support team or a functional consultant who specializes in Project System for further assistance.