2548613 - Buttons do not respond in PO and PR Fiori Apps

• When clicking on "Create RFQ" or "Create purchase order" buttons in Fiori app "Manage Purchase Requisitions" nothing happens.
• Following error is displayed in F12 screen: 

abap.js:2 Uncaught SyntaxError: Unexpected token u in JSON at position 0
at JSON.parse (<anonymous>)
at f.successCreateDraft (Component-preload.js:74)
at p (jquery-dbg.js:497)
at _ (ODataModel-dbg.js:2584)
at _ (ODataModel-dbg.js:1653)
at ODataModel-dbg.js:3252
at datajs-dbg.js:1634
at XMLHttpRequest.p9 (datajs-dbg.js:2539)
at s.E.dispatch (abap.js:2)
at XMLHttpRequest.X.handleEvent (abap.js:2)

Or

• When trying to access some search help or clicking on "Go" in Fiori apps "Manage Purchase Orders" or "Create Purchase Order" nothing happens. 
• Following error is displayed in F12 screen: 
  

  Uncaught TypeError: Cannot read property 'getName' of undefined
  at f._getODataParameterForFilterBarSearch (https:.../Component-preload.js:107:3341)
  at f.handleValueHelpSupplier (https://...Component-preload.js:93:838)
  at f.a.fireEvent (https:/...sap/fiori/core-min-2.js:51:1410)
  at f.a.fireEvent (https://s....js:70:3083)
  at f.fireValueHelpRequest (https:/...ri/core-min-2.js:55:7003)
  at f.<anonymous> (https://...js:363:9047)
  at f.a.fireEvent (https://....js:51:1410)
  at f.a.fireEvent (https://....js:70:3083)
  at f.firePress (https://...55:7003)
  at f.c.(anonymous function) [as onclick] (https://....js:78:2408)

•  SAP Fiori 1.0
•  SAP S/4HANA 1610 
•  SAP S/4HANA 1709 
•  SAP S/4HANA, on-premise edition 1511 

MM_PR_PRCS1, fiori, request for quotation, PO, PR, MM_PO_CRES1 , KBA , MM-FIO-PUR-REQ-SSP , Fiori UI for Self Service Procurement , MM-FIO-PUR-REQ-SOC , Fiori UI for Sourcing Purchase Requisitions , Problem