How To Fix DT116 - The namespace QCM is reserved for table conversions

SAP Error Message - Details

• Message type: E = Error

• Message class: DT - Table activation (incl. indexes)

• Message number: 116

• Message text: The namespace QCM is reserved for table conversions

What causes this issue?

You tried to create a table, structure or view in the namespace QCM.
This namespace is used during the conversion for the creation of
temporary tables and is therefore locked for normal objects.

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?

Select another name

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message DT116 - The namespace QCM is reserved for table conversions ?

  The SAP error message DT116 indicates that the namespace "QCM" is reserved for table conversions. This error typically arises when there is an attempt to create or modify an object (like a table or a data element) in a namespace that is reserved for specific system purposes, in this case, for table conversions.
  Cause:
  
  Reserved Namespace: The namespace "QCM" is specifically reserved by SAP for internal use related to table conversions. Attempting to create or modify objects in this namespace will trigger the error.
  Development Objects: If you are trying to create a development object (like a table, structure, or data element) in the QCM namespace, it will not be allowed.
  
  Solution:
  
  Use a Different Namespace: Instead of using the QCM namespace, choose a different namespace for your development objects. Custom development should typically be done in a customer-specific namespace (like Z or Y).
  Check Object Names: Ensure that the object names you are trying to create or modify do not inadvertently use the QCM namespace.
  Review Documentation: If you are unsure about the namespaces and their purposes, refer to SAP documentation or consult with your SAP Basis or development team for guidance on proper namespace usage.
  
  Related Information:
  
  Namespaces in SAP: SAP uses namespaces to organize and manage objects within the system. Reserved namespaces are typically used for system-related objects, while customer-specific namespaces (like Z and Y) are meant for custom developments.
  Table Conversions: The QCM namespace is specifically related to table conversions, which are processes that involve changing the structure of database tables, often during upgrades or migrations.
  SAP Notes: Check SAP Notes for any updates or specific guidance related to this error message. SAP Notes can provide additional context or solutions for specific scenarios.
  
  If you continue to encounter issues or if the error message appears in a different context, it may be beneficial to consult with your SAP support team or refer to SAP's official support channels for further assistance.