How To Fix CN027 - Enter an activity number

CN027 - Overview

• Message type: E = Error

• Message class: CN - Meldungen für Netzpläne

• Message number: 027

• Message text: Enter an activity number

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?

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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 CN027 - Enter an activity number ?

  The SAP error message CN027 ("Enter an activity number") typically occurs in the context of project management or controlling modules, particularly when working with network activities in SAP. This error indicates that the system expects an activity number to be entered, but it has not been provided.
  
  Cause:
  
  Missing Activity Number: The most common cause is that the user has not entered an activity number in the relevant field when trying to create or modify a project or network.
  Incorrect Transaction: The user may be in a transaction that requires an activity number, but they are not in the correct context or screen to enter it.
  Data Entry Error: The user may have overlooked the field or made a mistake while entering data.
  
  
  Solution:
  
  Enter an Activity Number: The simplest solution is to ensure that you enter a valid activity number in the required field. Check if the activity number exists in the system.
  Check Transaction Context: