Custom signals

Telemetry is emitted by the platform and application. Considering application telemetry, we already noticed earlier that this is typically instrumented using code unit 1351 Telemetry Subscribers. For example, signal AL0000E24 is sent when subscribing to OnAfterEnqueueJobQueueEntry published in code unit 453 Job Queue - Enqueue. Below is the relevant code snippet for the subscriber:

[EventSubscriber(ObjectType::Codeunit, Codeunit::"Job Queue - Enqueue", 'OnAfterEnqueueJobQueueEntry', '', false, false)]
local procedure SendTraceOnAfterEnqueueJobQueueEntry(var JobQueueEntry: Record "Job Queue Entry")
var
  TranslationHelper: Codeunit "Translation Helper";
  Dimensions: Dictionary of [Text, Text];
Begin
  TranslationHelper.SetGlobalLanguageToDefault();
  SetJobQueueTelemetryDimensions(JobQueueEntry, Dimensions);
  if IsNullGuid(JobQueueEntry."System Task ID") then
    Telemetry.LogMessage('0000FNY&apos...