According to the SAP tutorial guide, you are using URL https://tools.hana.ondemand.com/latest or https://tools.hana.ondemand.com/<eclipse-version> to install ABAP Development Tools in Eclipse. During installation you get an error like below:
SAP Development Tools for Eclipse
Could not find https://tools.hana.ondemand.com/latest, unable to read repository at, Install New Software, certificate path, unable to find valid certification path to requested target, IDM, Developer Studio, PKIX path building failed , KBA , BC-DWB-AIE , Installation and infrastructure for ABAP tools in Eclipse , BC-IAM-IDM , Identity Management , Problem
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