diff --git a/swh/deposit/cli/client.py b/swh/deposit/cli/client.py
--- a/swh/deposit/cli/client.py
+++ b/swh/deposit/cli/client.py
@@ -142,7 +142,8 @@
     # retrieve user's collection
     sd_content = client.service_document()
     if "error" in sd_content:
-        raise InputError("Service document retrieval: %s" % (sd_content["error"],))
+        msg = sd_content["error"]["summary"]
+        raise InputError(f"Service document retrieval: {msg}")
     collection = sd_content["app:service"]["app:workspace"]["app:collection"][
         "sword:name"
     ]
diff --git a/swh/deposit/client.py b/swh/deposit/client.py
--- a/swh/deposit/client.py
+++ b/swh/deposit/client.py
@@ -385,6 +385,10 @@
         """
         return parse_xml(xml_content)
 
+    def parse_result_error(self, xml_content):
+        result = super().parse_result_error(xml_content)
+        return {"error": result}
+
 
 class StatusDepositClient(BaseDepositClient):
     """Status information on a deposit.