How To Fix I10026 - Activity type &1 does not exist or not valid from &2 to &3

I10026 - Overview

• Message type: E = Error

• Message class: I10 - Work Management IDocs Messages

• Message number: 026

• Message text: Activity type &1 does not exist or not valid from &2 to &3

What causes this issue?

Activity type specified does not exist or is not valid between earliest
scheduled start date and latest scheduled finish date for the related
operation.

How to fix this error?

Use valid activity type and resubmit IDoc.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message I10026 - Activity type &1 does not exist or not valid from &2 to &3 ?

  The SAP error message I10026 indicates that the specified activity type does not exist or is not valid for the given date range. This error typically occurs in the context of cost planning, activity allocation, or when working with internal orders or cost centers in SAP.
  
  Cause:
  
  Non-Existent Activity Type: The activity type specified in the transaction does not exist in the system.
  Invalid Date Range: The activity type may exist, but it is not valid for the specified date range. This could be due to the activity type being inactive or not defined for the given period.
  
  Configuration Issues: There may be configuration issues in the controlling area or the activity type settings that prevent it from being recognized.
  Master Data Issues: The master data for the activity type may not be properly maintained or may have been deleted.
  
  
  Solution:
  
  
  Check Activity Type: Verify that the activity type specified in the transaction exists in the system.