HTTPS endpoint with certificate getting failed

[padmanabhamv]

<HTTPTargetConnection>

  <Properties/>

  <!--<URL>https://vhmuuftdci.sap.trellix.com:44300//blweb/rest/fi/document/check</URL>-->

  <URL>https://10.0.136.2:44300/blweb/rest/fi/document/check</URL>

  <SSLInfo>

    <Enabled>true</Enabled>

    <IgnoreValidationError>true</IgnoreValidationError>

    <KeyStore>ref://sap-nonprod-dev</KeyStore>

    <TrustStore>ref://sap-nonprod-dev</TrustStore>

  </SSLInfo>

</HTTPTargetConnection>

imported SAP cert in the keystore.

while deploying getting error below.

required reference "organizations/svc-apigee-dev-05/environments/dev/references/sap-nonprod-dev" does not exist

how do i reference the cert for the given endpoint?