A change set in stream A was created. This change set is delivered via API to the stream A. The task tracker response of the delivery session is: completed and passed. Afterward the stream A is delivered via API to stream B. This works fine, if it is a new requirement artifact (also completed and passed). But if the requirement artifact was changed before on stream B, the delivery from stream A to stream B failed, if the delivery option "dominant source attribute" is used.

Here is the code to update the before created delivery session:

PUT https://example/rm/delivery-sessions/_WnjtkKoPEe6yg5uwBuHkhQ
OSLC-Core-Version: 2.0
Accept: application/rdf+xml
Content-Type: application/rdf+xml
Configuration-Context: https:/example/rm/cm/stream/_QznE4NzuEe2T6KW9b8u7AA

<?xml version="1.0" encoding="UTF-8"?>
<rdf:RDF
    xmlns:dcterms="http://purl.org/dc/terms/"
    xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
    xmlns:oslc="http://open-services.net/ns/core#"
    xmlns:rdfs="http://www.w3.org/2000/01/rdf-schema#"
    xmlns:dng_config ="http://jazz.net/ns/rm/dng/config#">
  <dng_config:DeliverySession rdf:about="https://example/rm/delivery-sessions/_WnjtkKoPEe6yg5uwBuHkhQ">
    <dng_config:deliverySessionState rdf:resource="http://jazz.net/ns/rm/dng/config#delivered"/>
    <dng_config:source rdf:resource=" https://example/rm/cm/stream/_QznE4NzuEe2T6KW9b8u7AA "/>
    <dng_config:target rdf:resource="https://example/rm/cm/stream/_y2jtMNzrEe2T6KW9b8u7AA"/>
    <dng_config:DeliveryPolicy  rdf:about="http://jazz.net/ns/rm/dng/config#DeliveryPolicy">
        <dng_config:dominantSourceAttribute rdf:resource="https://example/rm/types/AD_uxZHl9kaEe2T6KW9b8u7AA"/>
        <dng_config:dominantSourceAttribute rdf:resource="https://example/rm/types/AD_uxZHmtkaEe2T6KW9b8u7AA"/>
        <dng_config:dominantSourceAttribute rdf:resource="https://example/rm/types/AD_uxZHmNkaEe2T6KW9b8u7AA"/>
        <dng_config:dominantSourceAttribute rdf:resource="https://example/rm/types/AD_uxZHmdkaEe2T6KW9b8u7AA"/>
        <dng_config:dominantSourceAttribute rdf:resource="https://example/rm/types/AD_uxZHm9kaEe2T6KW9b8u7AA"/>
        <dng_config:dominantSourceAttribute rdf:resource="https://example/rm/types/AD_uxZHltkaEe2T6KW9b8u7AA"/>
        <dng_config:dominantSourceAttribute rdf:resource="https://example/rm/types/AD_uxZHlNkaEe2T6KW9b8u7AA"/>
        <dng_config:dominantSourceAttribute rdf:resource="https://example/rm/types/AD_JJaLkNzpEe2T6KW9b8u7AA"/>
        <dng_config:dominantSourceAttribute rdf:resource="https://example/rm/types/AD_uxZHldkaEe2T6KW9b8u7AA"/>
    </dng_config:DeliveryPolicy>
  </dng_config:DeliverySession>
</rdf:RDF>