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Business Automation ConsultantIBM Expert Labs
Dear Emmaunel,We have internal rest APIs in BAW/BPM product,which can be called from external parties or internal in screens which can facilitates development process.as per below,https://atanubpmtips.wordpress.com/category/rest-api/
or you can check function avalialbe for each control as per BAW UI TK as per below eg .. (Single Select)https://www.ibm.com/docs/en/bpm/8.6.0?topic=toolkit-single-select