How To Fix /SAPAPO/CTM1521 - Minimum duration (&1) is too short (PPM &4; activity &2; mode &3)

/SAPAPO/CTM1521 - Overview

• Message type: E = Error

• Message class: /SAPAPO/CTM1 -

• Message number: 521

• Message text: Minimum duration (&1) is too short (PPM &4; activity &2; mode &3)

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message /SAPAPO/CTM1521 - Minimum duration (&1) is too short (PPM &4; activity &2; mode &3) ?

  The SAP error message /SAPAPO/CTM1521 indicates that the minimum duration specified for a particular activity in the Capacity Planning or Production Planning module is too short. This error typically arises in the context of the SAP Advanced Planning and Optimization (APO) module, particularly when using the Capable-to-Match (CTM) functionality.
  
  Cause:
  The error message is triggered when:
  
  The duration of a specific activity (e.g., production, setup, or maintenance) is less than the minimum duration defined in the system.
  The activity in question is associated with a Production Process Model (PPM) that has constraints on the minimum duration for its execution.
  The mode of the activity (e.g., machine, labor) has a defined minimum duration that is not being met by the planned order or activity.
  
  
  Solution:
  To resolve this error, you can take the following steps:
  
  
  Check Minimum Duration Settings:
  
  Go to the relevant PPM in the SAP system and check the settings for the activity in question. Look for the