diff --git a/README.md b/README.md
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+++ b/README.md
@@ -13,3 +13,6 @@ Transfer Execution is a web service whereby the requesting entity (chatTransferE
 
 ### ChatTransferExecutionResponse
 The responding entity (chatTransferExecutionResponse) provides a Status Code, refer to [chattrexeresp.json](https://forge.etsi.org/rep/emtel/ts-103-698/json-schema/blob/v1.1.1/chattrexeresp.json)
+
+### MessageDeliveryStatus
+Contains a list of the status of one or multiple previously received messages, refer to [msgdelstatus.json](https://forge.etsi.org/rep/emtel/ts-103-698/json-schema/blob/v1.1.1/msgdelstatus.json)
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