How To Fix PPH_DD080 - Activity &1 cannot be replaced by class &2

SAP Error Message - Details

• Message type: E = Error

• Message class: PPH_DD - Messages for Demand Driven

• Message number: 080

• Message text: Activity &1 cannot be replaced by class &2

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 PPH_DD080 - Activity &1 cannot be replaced by class &2 ?

  The SAP error message PPH_DD080, which states "Activity &1 cannot be replaced by class &2," typically occurs in the context of SAP Project System (PS) or Production Planning (PP) when there is an attempt to replace an activity with a class that is not compatible or does not meet the required criteria.
  Cause:
  
  Incompatible Activity and Class: The activity you are trying to replace may not be compatible with the class you are attempting to use. This could be due to differences in the type of activity (e.g., a work activity cannot be replaced with a service activity).
  Configuration Issues: There may be configuration settings in the system that prevent the replacement of activities with certain classes.
  Missing Authorizations: The user may not have the necessary authorizations to perform the replacement.
  Incorrect Class Assignment: The class you are trying to use may not be correctly assigned or defined in the system.
  
  Solution:
  
  Check Compatibility: Verify that the activity you are trying to replace is compatible with the class you are using. Review the definitions and attributes of both the activity and the class.
  Review Configuration: Check the configuration settings in the SAP system related to activity types and classes. Ensure that the settings allow for the replacement you are attempting.
  User Authorizations: Ensure that the user has the necessary authorizations to perform the replacement. This may involve checking roles and permissions in the SAP system.
  Correct Class Assignment: If the class is not correctly defined, you may need to correct its assignment or create a new class that meets the requirements for the activity.
  Consult Documentation: Refer to SAP documentation or help resources for specific guidelines on activity and class replacements in your version of SAP.
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that may address this specific error message or provide additional troubleshooting steps.
  Transaction Codes: Familiarize yourself with relevant transaction codes such as CJ20N (Project Builder) or CJI3 (Project Actual Line Items) to analyze the project structure and activities.
  Community Forums: Consider searching or posting in SAP community forums for insights from other users who may have encountered the same issue.
  
  If the problem persists after following these steps, it may be beneficial to engage with your SAP support team or a consultant who specializes in SAP PS or PP for further assistance.