Here’s a quick walk through
EpicorRest.AppPoolHost = "your.tld.server";
EpicorRest.AppPoolInstance = "yourEpicorInstance";
EpicorRest.UserName = "epicor";
EpicorRest.Password = "epicor";
EpicorRest.IgnoreCertErrors = true;
//get
Dictionary<string, string> dic = new Dictionary<string, string>();
dic.Add($"filter", "ABCCode eq 'A'");
dynamic abcData = EpicorRest.DynamicGet("Erp.BO.EmpBasicSvc", "List", dic);
//GetJSON String
string json = EpicorRest.DynamicGetJSON("Erp.BO.EmpBasicSvc", "List", dic);