repeater(General)

fields field(1; "Item No."; Code[20]) field(2; Description; Text[100]) keys key(PK; "Item No.") Clustered = true;

[IntegrationEvent(true, false)] procedure OnAfterValidateSalesLine(var SalesLine: Record "Sales Line") (in your codeunit):

PageType = API; APIPublisher = 'mycompany'; APIGroup = 'sales'; APIVersion = 'v1.0'; EntityName = 'customer'; EntitySetName = 'customers'; SourceTable = Customer; ...

query 50002 "Sales Overview"

codeunit 50099 "My Test"

// Page 50000 page 50000 "Hello World List"