Integrating Appian 16.3 with SharePoint 2013

Hi All,

I am working on integrating Appian 16.3 with SharePoint 2013. I am using “<sitename>/_api/Web/getfolderbyserverrelativeurl “ with “a!shpInvoke” to read the content of a folder, but getting below error. Please share your inputs on this.

Received: [success:false,result:,error:[code:[category:0,namespace:1,detail:0],title:sharepointinvoke function error,message:The external server for this system [key=sharepoint.external] generated an exception when calling a function [shpInvoke]. Details from external system: java.lang.RuntimeException: Exceeded allowed retry attempts,detail:],@attributes:[@anyAttribute:[_dirty:false,_bannerText:,_refresh:]]]