The procedure GetApplicationAreas in codeunit 9177 "Application Area Cache" does only remove spaces from the fieldref name.

We have used a dash "-" in our combined prefix, which leads to errors when the plattform procedure ApplicationArea is called.

Maybe all other special characters should be removed too.

And you should maybe improve the documentaiton, too.

https://docs.microsoft.com/en-us/dynamics365/business-central/dev-itpro/developer/devenv-extending-application-areas#adding-an-application-area

[Scope('OnPrem')]

procedure SetupApplicationArea()

begin

  ApplicationArea(GetApplicationAreas());

end;

local procedure GetApplicationAreas(ApplicationAreaSetup: Record "Application Area Setup") ApplicationAreas: Text

var

  RecRef: RecordRef;

  FieldRef: FieldRef;

  FieldIndex: Integer;

begin

  RecRef.GetTable(ApplicationAreaSetup);

  // Index 1 to 3 are used for the Primary Key fields, we need to skip these fields

  for FieldIndex := 4 to RecRef.FieldCount do begin

    FieldRef := RecRef.FieldIndex(FieldIndex);

    if FieldRef.Value() then

      if ApplicationAreas = '' then

        ApplicationAreas := '#' + DelChr(FieldRef.Name)

      else

        ApplicationAreas := ApplicationAreas + ',#' + DelChr(FieldRef.Name);

  end;

end;

This results in a runtime bug that prevents the Client from loading.