How To Fix 5N305 - You have marked more than one activity; this is not allowed

SAP Error Message - Details

• Message type: E = Error

• Message class: 5N - HR NL: Error Messages for Infotype Module Pools (NL)

• Message number: 305

• Message text: You have marked more than one activity; this is not allowed

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 5N305 - You have marked more than one activity; this is not allowed ?

  The SAP error message 5N305, "You have marked more than one activity; this is not allowed," typically occurs in the context of project management or activity planning within SAP, particularly in modules like SAP Project System (PS) or SAP Controlling (CO). This error indicates that the user has attempted to select or mark multiple activities when the system only allows for a single selection at a time.
  Cause:
  
  Multiple Selections: The user has selected more than one activity in a list or table where only one selection is permitted.
  System Configuration: The configuration of the SAP system may restrict certain operations to single selections for data integrity or business logic reasons.
  User Error: The user may not be aware of the selection limitations and inadvertently selects multiple items.
  
  Solution:
  
  Single Selection: Ensure that you only select one activity at a time. Deselect any additional activities before proceeding with the operation.
  Check User Interface: If you are using a selection screen or a list, make sure to use the appropriate selection method (e.g., clicking on a single row rather than using checkboxes for multiple selections).
  Review Documentation: Consult the relevant SAP documentation or help files for the specific transaction or module you are working with to understand the selection limitations.
  Training: If this is a recurring issue, consider providing training or guidance to users on how to properly navigate the system and understand selection limitations.
  
  Related Information:
  
  Transaction Codes: This error may occur in various transaction codes related to project management, such as CJ20N (Project Builder) or CJI3 (Project Actual Line Items).
  SAP Notes: Check for any SAP Notes or Knowledge Base Articles that may address this specific error or provide additional context.
  User Roles and Permissions: Ensure that the user has the appropriate roles and permissions to perform the intended actions within the system.
  System Version: Be aware that the behavior of the system may vary depending on the version of SAP you are using, so ensure that you are referencing the correct version for troubleshooting.
  
  If the issue persists after following these steps, it may be beneficial to consult with your SAP support team or a technical consultant for further assistance.