How To Fix T1078 - Create transaction in activity category &

T1078 - Overview

• Message type: E = Error

• Message class: T1 - Financial instruments

• Message number: 078

• Message text: Create transaction in activity category &

What causes this issue?

A processing category was defined in Customizing which cannot begin
with the processing activity selected.

Error message extract from SAP system. Copyright SAP SE.

T1078 - Details

• The SAP error message T1078 typically occurs when there is an issue related to the creation of a transaction in a specific activity category. This error can arise in various contexts, such as during the creation of a project, activity, or when trying to assign a transaction to a specific category in SAP Project System (PS) or Controlling (CO) modules.
  
  Cause:
  
  Invalid Activity Category: The activity category you are trying to use may not be valid or may not exist in the system.
  Authorization Issues: The user may not have the necessary authorizations to create transactions in the specified activity category.
  
  Configuration Issues: There may be configuration issues in the system related to the activity categories or the project structure.
  Missing Master Data: Required master data (like cost centers, internal orders, etc.) may be missing or incorrectly configured.
  
  
  Solution:
  
  Check Activity Category: Verify that the activity category you are trying to use is valid and exists in