How To Fix SGT_01819 - Requirement segment cannot be changed; subsequent document created

SGT_01819 - Overview

• Message type: E = Error

• Message class: SGT_01 - SGT_01

• Message number: 819

• Message text: Requirement segment cannot be changed; subsequent document created

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message SGT_01819 - Requirement segment cannot be changed; subsequent document created ?

  The SAP error message SGT_01819, which states "Requirement segment cannot be changed; subsequent document created," typically occurs in the context of SAP's Advanced Planning and Optimization (APO) or Supply Chain Management (SCM) modules. This error indicates that there is an attempt to modify a requirement segment that has already been referenced in a subsequent document, making it immutable.
  
  Cause:
  
  Subsequent Document Creation: The requirement segment you are trying to change has already been used in a subsequent document (like a production order, purchase order, etc.). Once a requirement is linked to another document, it cannot be altered to maintain data integrity.
  Data Integrity Rules: SAP enforces strict data integrity rules to ensure that changes do not lead to inconsistencies in the planning and execution processes.
  
  
  Solution:
  
  Identify the Dependent Document: Check which subsequent document is referencing the requirement segment. You can do this by reviewing the document flow or using transaction codes like MD04 (Stock/Requirements