Issue #3491663 Corrected class name

src/Constant/EntityType/Id.php

@@ -5,7 +5,7 @@ namespace Drupal\acumatica\Constant\EntityType;
 /**
  * Holds IDs for entity types provided by this module.
  */
-class ID {
+class Id {
 
   /**
    * The ID of the Ship Via entity type.