How to default a Sub inventory for Supply Planned Order released PR

Summary:

When planned Purchase orders are released from Supply planning for creating supply request through Supply Orchestration and create the PR

We want default Destination Sub inventory

While reviewing some documents and references, observed that we can use Supply orchestration service mappings to override the default values or insert values. Does anyone worked onthe expression writing for Purchase request lines? If, please do share your inputs.

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Version (include the version you are using, if applicable):

Supply Planning Cloud

Code Snippet (add any code snippets that support your topic, if applicable):