How To Fix CDS_UNIT_MESSAGE001 - Data source '&1' has unknown type '&2'

CDS_UNIT_MESSAGE001 - Overview

• Message type: E = Error

• Message class: CDS_UNIT_MESSAGE - Message Class

• Message number: 001

• Message text: Data source '&1' has unknown type '&2'

Self-Explanatory Message

Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.

To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

Unfortunately, there isn't any extra information in this error notice.

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Smart SAP Assistant

• What is the cause and solution for SAP error message CDS_UNIT_MESSAGE001 - Data source '&1' has unknown type '&2' ?

  The SAP error message CDS_UNIT_MESSAGE001 indicates that there is an issue with a Core Data Services (CDS) view or data source in your SAP system. Specifically, the message states that the data source specified (denoted by &1) has an unknown type (denoted by &2). This typically occurs when the system cannot recognize the data source type due to various reasons.
  Causes:
  
  Incorrect Data Source Definition: The data source may not be defined correctly in the system, or it may be referencing a type that is not recognized.
  Missing or Inactive Data Source: The data source might not exist in the system, or it could be inactive.
  Transport Issues: If the CDS view or data source was transported from another system, there may have been issues during the transport process that led to missing components.
  Version Compatibility: The data source type may not be compatible with the version of the SAP system you are using.
  Authorization Issues: