diff --git a/services/lib/src/GlobalConstants.h b/services/lib/src/GlobalConstants.h
--- a/services/lib/src/GlobalConstants.h
+++ b/services/lib/src/GlobalConstants.h
@@ -22,5 +22,7 @@
 
 const std::string AWS_REGION = "us-east-2";
 
+const std::string ATTACHMENT_DELIMITER = ";";
+
 } // namespace network
 } // namespace comm