Some standard fields unable to find in standard form template

When we edit the modular signifier template successful Adobe LiveCycle Designer, we are not capable to find immoderate modular fields that are disposable successful Odata.

For example, the purchase requisition number successful acquisition bid item. We cannot find the PR fig successful acquisition transportation docket nodes.

Please counsel however tin we get and show the PR fig successful modular PO report? Any workaround that are disposable successful S/4HANA Cloud Pubic Edition that tin widen the fields oregon information source?