src/Controller/APIController.php

@@ -3650,8 +3650,13 @@ class APIController extends Controller implements LoggedController
         }
         else
         {
-            // TODO: limit locations to 6. If more than 6, pop the first one out
+            // limit locations to 6. If more than 6, pop the first one out
             // add location to existing customer meta
+            $meta_count = count($c_meta->getAllMetaInfo());
+
+            if ($meta_count >= 6)
+                $c_meta->popMetaInfo();
+
             $c_meta->addMetaInfo($name, $loc_info);
         }
 

src/Entity/CustomerMetadata.php

@@ -76,4 +76,12 @@ class CustomerMetadata
     {
         return $this->meta_info;
     }
+
+    public function popMetaInfo()
+    {
+        if (count($this->meta_info) > 0)
+        {
+            array_shift($this->meta_info);
+        }
+    }
 }