How To Fix OD533 - A constraint has become negative due to "Subtract heel"

OD533 - Overview

• Message type: E = Error

• Message class: OD - IS-Oil: TSW Traders' and Schedulers' Workbench messages

• Message number: 533

• Message text: A constraint has become negative due to "Subtract heel"

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message OD533 - A constraint has become negative due to "Subtract heel" ?

  The SAP error message OD533, which states "A constraint has become negative due to 'Subtract heel'," typically occurs in the context of SAP Advanced Planning and Optimization (APO) or SAP Integrated Business Planning (IBP) when dealing with production planning or scheduling. This error indicates that a constraint (such as capacity or resource availability) has been violated due to the subtraction of a "heel" quantity, which refers to the leftover material or product that cannot be used in the production process.
  
  Cause:
  
  Negative Constraints: The error arises when the calculation of available capacity or resources results in a negative value. This can happen if the heel quantity is subtracted from the available capacity, leading to an unrealistic scenario where the capacity is less than zero.
  Incorrect Data: There may be incorrect or inconsistent data in the master data, such as production rates, lead times, or heel quantities.
  Planning Parameters: The planning parameters or settings may