How To Fix RTCMMD126 - First adjust the "Valid From" date of all child nodes

RTCMMD126 - Overview

• Message type: E = Error

• Message class: RTCMMD - Article Hierarchy

• Message number: 126

• Message text: First adjust the "Valid From" date of all child nodes

What causes this issue?

The validity period of the assignment to change must lie within the
validity period of the parent node assignment.

System Response

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

How to fix this error?

Change the valid-from date to a date later than the valid-from date of
the parent node assignment.

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message RTCMMD126 - First adjust the "Valid From" date of all child nodes ?

  The SAP error message RTCMMD126, which states "First adjust the 'Valid From' date of all child nodes," typically occurs in the context of managing master data, particularly in the Material Management (MM) module or when dealing with hierarchical data structures in SAP.
  
  Cause:
  This error arises when you are trying to change the "Valid From" date of a parent node in a hierarchy (such as a material group or a product hierarchy) without first adjusting the "Valid From" dates of its child nodes. In SAP, the validity of a parent node is dependent on the validity of its child nodes. If the child nodes have a "Valid From" date that is later than the parent node's date, the system will not allow the change to be made.
  
  Solution:
  To resolve this error, follow these steps:
  
  
  Identify Child Nodes: Determine which child nodes are associated with the parent node you are trying to modify. You can