How to create a suite execution record using RQM Reportable REST API?

It's simple and easy by checking the XML presentation of any existing resources.

I'm not sure what "TDP REST API" is. But for RQM Reportable REST API, the workflow is like this.

1. Find out the URI for an existing iteration (there is no REST API to create an iteration).

2. Use the POST operation to create a test phase, and the request body (XML) should include
<ns2:iteration href="https://clm.jkebanking.net:9443/qm/process/project-areas/_8aqdofQkEeex1tX1crJPcQ/timelines/_8kM0IPQkEeex1tX1crJPcQ/iterations/_q6R6pvQlEeex1tX1crJPcQ"/>
<ns2:testplan href="https://clm.jkebanking.net:9443/qm/service/com.ibm.rqm.integration.service.IIntegrationService/resources/Money+that+Matters+%28Quality+Management%29/testplan/urn:com.ibm.rqm:testplan:10" />

3. If successful, the response header "Location" contains the "slug" ID for the new test phase.

4. Use the POST operation to create a test suite execution record, and the request body (XML) should include
<ns2:testplan href="https://clm.jkebanking.net:9443/qm/service/com.ibm.rqm.integration.service.IIntegrationService/resources/Money+that+Matters+%28Quality+Management%29/testplan/urn:com.ibm.rqm:testplan:10"/>
<ns2:testsuite href="https://clm.jkebanking.net:9443/qm/service/com.ibm.rqm.integration.service.IIntegrationService/resources/Money+that+Matters+%28Quality+Management%29/testsuite/urn:com.ibm.rqm:testsuite:7"/>
<ns2:testphase href="https://clm.jkebanking.net:9443/qm/service/com.ibm.rqm.integration.service.IIntegrationService/resources/Money+that+Matters+%28Quality+Management%29/testphase/slug__cY9gEvazEeex1tX1crJPcQ"/>
Note: the test plan should be the same as the one at step 2, and the test suite should be associated in the same plan.

5. If successful, the response header "Location" contains the "slug" ID for the new test suite execution record.

For more information, see https://jazz.net/wiki/bin/view/Main/RqmApi