You want to use the new Custom Pre-Condition: New BADI available in 1902 S4HC.
You can define new pre-conditions in Manage workflow app.You can use the Custom Fields and Logic app to create a BAdI implementation and publish the custom logic.
SAP S/4HANA Cloud
SAP S/4HANA 1909
withdraw, badi, flexible, workflow, approve, my inbox , KBA , MM-FIO-PUR-REL , Fiori UI for Purchasing Approval , MM-PUR-REQ , Purchase Requisitions , How To
About this pageThis is a preview of a SAP Knowledge Base Article. Click more to access the full version on SAP for Me (Login required).
Search for additional results
Visit SAP Support Portal's SAP Notes and KBA Search.