How To Fix RSDMDM021 - InfoObject &1 cannnot be maintained since ext. read access is set for it

RSDMDM021 - Overview

• Message type: E = Error

• Message class: RSDMDM - RSDMDM

• Message number: 021

• Message text: InfoObject &1 cannnot be maintained since ext. read access is set for it

Self-Explanatory Message

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RSDMDM021 - Details

• The SAP error message RSDMDM021 indicates that you are trying to maintain an InfoObject (denoted by &1) that has been set to "external read access." This means that the InfoObject is configured in such a way that it cannot be modified or maintained directly in the system.
  
  Cause:
  The primary cause of this error is that the InfoObject has been defined with external read access, which restricts any changes to its structure or attributes. This setting is typically used to protect certain InfoObjects from being altered, ensuring data integrity and consistency, especially in environments where multiple users or systems access the same data.
  
  Solution:
  To resolve this issue, you can take the following steps:
  
  
  Check the InfoObject Settings:
  
  Go to the InfoObject maintenance transaction (e.g., RSA1 or RSD1).
  Locate the InfoObject in question and check its properties.
  Verify if the "External Read Access" setting is enabled.
  
  
  
  Change the Access Settings:
  
  If you have the necessary authorizations, you can change the