How To Fix CN145 - Unit calculation for activity & was not created/changed

SAP Error Message - Details

• Message type: E = Error

• Message class: CN - Meldungen für Netzpläne

• Message number: 145

• Message text: Unit calculation for activity & was not created/changed

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 CN145 - Unit calculation for activity & was not created/changed ?

  The SAP error message CN145 ("Unit calculation for activity & was not created/changed") typically occurs in the context of project management and controlling, particularly when dealing with activity types and their associated units of measure in SAP. This error can arise during various processes, such as when trying to create or change an activity in a project.
  Cause:
  The error can be caused by several factors, including:
  
  
  Missing or Incorrect Unit of Measure: The activity type may not have a defined unit of measure, or the unit of measure may not be compatible with the data being entered.
  
  
  Configuration Issues: There may be issues in the configuration of the activity type or the related settings in the controlling area.
  
  
  Data Inconsistencies: There could be inconsistencies in the data being used, such as incorrect or missing master data for the activity type.
  
  
  Authorization Issues: The user may not have the necessary authorizations to create or change the activity.
  
  
  System Settings: There may be system settings or parameters that are not correctly configured, leading to this error.
  
  
  Solution:
  To resolve the CN145 error, you can take the following steps:
  
  
  Check Unit of Measure:
  
  Ensure that the activity type has a valid unit of measure assigned. You can check this in the configuration settings for the activity type.
  
  
  
  Review Configuration:
  
  Go to the configuration settings for the controlling area and verify that the activity types are correctly configured. This includes checking the settings for cost centers, internal orders, and project definitions.
  
  
  
  Validate Master Data:
  
  Ensure that all relevant master data (such as cost centers, activity types, and project definitions) is correctly maintained and does not have any inconsistencies.
  
  
  
  Check Authorizations:
  
  Verify that the user has the necessary authorizations to create or change activities. This can be checked in the user roles and profiles.
  
  
  
  Consult SAP Notes:
  
  Look for any relevant SAP Notes that may address this specific error. SAP frequently releases notes that provide solutions or workarounds for known issues.
  
  
  
  Debugging:
  
  If the issue persists, consider debugging the transaction to identify the exact point of failure. This may require assistance from a technical consultant.
  
  
  
  Contact SAP Support:
  
  If you are unable to resolve the issue, consider reaching out to SAP support for further assistance.
  
  
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as CJ20N (Project Builder), CJI3 (Project Actual Line Items), and KP26 (Change Plan Data) that may be involved in the process.
  Documentation: Review SAP documentation related to project management and controlling for best practices and guidelines.
  Community Forums: Engage with SAP community forums or user groups where similar issues may have been discussed.
  
  By following these steps, you should be able to identify and resolve the cause of the CN145 error in SAP.