3708238 - Error: "PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException" in Datasphere

The connection type is HANA. When validating connection, the error occurs:

---------------------------------------------------------------------------------------
Connection "xxx" couldn’t be established. 

Data flows can’t be used because of errors in the connection.
- Replication flows can’t be used because of errors in the connection.
- Remote tables can’t be used because of errors in the connection.

Data Flows: Cause: Remote source is down! Cause: SAP DBTech JDBC: Cannot connect to jdbc:sap://<HOST>:<PORT> [Cannot connect to host <HOST>:<PORT>. PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target -813: <IP>:<PORT>-><HOST>:<PORT> ConnectionID:0 SessionID:0].
Replication Flows: Cause: Remote source is down! Cause: SAP DBTech JDBC: Cannot connect to jdbc:sap://<HOST>:<PORT>[Cannot connect to host <HOST>:<PORT>. PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target -813: <IP>:<PORT>-> <HOST>:<PORT> ConnectionID:0 SessionID:0].
Remote Tables: Could not establish a secure connection because the server certificate couldn’t be validated. Please upload the certificate of the server or the certificate of the signing authority (CA). If you’re not authorized, please contact your administrator.

Correlation ID: XXXXXX

---------------------------------------------------------------------------------------

SAP Datasphere

DWC, DSP, DS, HANA On-premise, HANA Cloud , KBA , DS-DI-CON , Connections , Problem