How To Fix /IAM/OBJECT520 - Change of activity type not allowed; new type has a different category

SAP Error Message - Details

• Message type: E = Error

• Message class: /IAM/OBJECT -

• Message number: 520

• Message text: Change of activity type not allowed; new type has a different category

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.

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Smart SAP Assistant

• What is the cause and solution for SAP error message /IAM/OBJECT520 - Change of activity type not allowed; new type has a different category ?

  The SAP error message /IAM/OBJECT520 Change of activity type not allowed; new type has a different category typically occurs when there is an attempt to change the activity type of a particular object (like a project, task, or resource) to a type that belongs to a different category. This is a validation error that ensures data integrity within the SAP system.
  
  Cause:
  
  Activity Type Mismatch: The new activity type you are trying to assign is categorized differently than the current one. For example, you might be trying to change a labor activity type to a material activity type, which are treated differently in SAP.
  Configuration Settings: The system configuration may restrict changes between certain categories of activity types to prevent inconsistencies in data processing.
  Business Logic: The business rules defined in the system may not allow for such changes due to the implications it may have on reporting, costing, or other processes.
  
  
  Solution:
  
  Verify Activity Types: