Message type: E = Error
Message class:  CNV_LTHCM_G_10 - LT HCM: General Message Class 
Message number: 003
Message text: Insufficient test data available; tests cannot be executed
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.
First, use our AnswerBot below to get a possible cause and solution (requires a premium subscription).
Also, review the in-depth Common Questions & Answers listed below; you could discover a solution there or be able to connect with others who have faced similar challenges.
You can also try searching the SAP support portal (support.sap.com) but you need a special user ID to access it. It is possible that an SAP support note exists that provides additional details about the mistake or even steps for fixing it.
The SAP error message CNV_LTHCM_G_10003 indicates that there is insufficient test data available for executing tests in the context of a data migration or conversion process, particularly related to the SAP Landscape Transformation (SLT) or SAP Data Migration projects.
Cause: Lack of Test Data: The primary cause of this error is that the system does not have enough test data to perform the required tests. This could be due to: Missing or incomplete data in the source system. Data not being properly extracted or loaded into the target system. Filters or selection criteria that limit the available data for testing.
Configuration Issues: There may be configuration issues in the migration project that prevent the system from accessing or recognizing the available test data. Data Model Changes: If there have been changes to the data model or structure, it may lead to discrepancies in the expected test data.
Solution: Check Data Availability: Ensure that the necessary test data is available
 Get instant SAP help. Sign up for our Free Essentials Plan.
Get instant SAP help. Sign up for our Free Essentials Plan. 
CNV_LTHCM_G_10002 Error while setting up test data
Self-Explanatory Message Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of...
CNV_LTHCM_G_10001 Execution only allowed in test system
Self-Explanatory Message Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of...
CNV_LTHCM_G_10004 Insufficient authorization; tests cannot be executed
Self-Explanatory Message Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of...
CNV_LTHCM_G_10005 Messages
Self-Explanatory Message Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of...
Click on this link to search all SAP messages.