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

SAP Error Message - Details

• 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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• What is the cause and solution for SAP error message RSDMDM021 - InfoObject &1 cannnot be maintained since ext. read access is set for it ?

  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 access settings of the InfoObject:
  
  Navigate to the InfoObject and change the access type from "external read" to "internal" or "read/write" as needed.
  Save the changes.
  
  
  
  
  
  Consult with Your Administrator:
  
  If you do not have the necessary permissions to change the settings, contact your SAP administrator or the person responsible for data modeling in your organization. They can assist in modifying the access settings or provide guidance on how to proceed.
  
  
  
  Review Documentation:
  
  Check any relevant documentation or guidelines within your organization regarding the management of InfoObjects. There may be specific policies in place that dictate how certain InfoObjects should be handled.
  
  
  
  Related Information:
  
  InfoObjects: These are the basic building blocks of the SAP BW data model, representing characteristics or key figures.
  Data Modeling: Understanding the data model and how InfoObjects interact with other components in SAP BW is crucial for effective data management.
  Authorization: Ensure that you have the appropriate authorizations to make changes to InfoObjects. This may involve roles and permissions set up in the SAP system.
  
  By following these steps, you should be able to address the RSDMDM021 error and proceed with your work on the InfoObject.