How To Fix /SAPAPO/PPM_MAINTAIN121 - No min.interval defined for act. in end-start relationships &1 &2 - &3 &4

/SAPAPO/PPM_MAINTAIN121 - Overview

• Message type: E = Error

• Message class: /SAPAPO/PPM_MAINTAIN -

• Message number: 121

• Message text: No min.interval defined for act. in end-start relationships &1 &2 - &3 &4

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message /SAPAPO/PPM_MAINTAIN121 - No min.interval defined for act. in end-start relationships &1 &2 - &3 &4 ?

  The SAP error message /SAPAPO/PPM_MAINTAIN121 indicates that there is an issue with the planning or scheduling of activities in the Advanced Planning and Optimization (APO) module, specifically related to the definition of minimum intervals in end-start relationships between activities.
  
  Cause:
  This error typically arises when:
  
  Missing Minimum Interval Definition: The system expects a minimum interval to be defined between the end of one activity and the start of another, but it has not been set up in the configuration.
  Incorrect Activity Relationships: The relationships between activities may not be properly defined, leading to conflicts in scheduling.
  Data Inconsistencies: There may be inconsistencies or missing data in the master data related to the activities or resources involved.
  
  
  Solution:
  To resolve this error, you can take the following steps:
  
  
  Check Activity Relationships:
  
  Go to the transaction where you define the relationships between activities (e.g., in the PPM or project management area).
  Ensure that the end-start relationships are correctly defined and that a