diff --git a/res/ari/resource_bridges.c b/res/ari/resource_bridges.c
index a036ce0f3b..919171139d 100644
--- a/res/ari/resource_bridges.c
+++ b/res/ari/resource_bridges.c
@@ -439,6 +439,27 @@ void ast_ari_record_bridge(struct ast_variable *headers, struct ast_record_bridg
 		stasis_app_recording_if_exists_parse(args->if_exists);
 	options->beep = args->beep;
 
+	if (options->terminate_on == STASIS_APP_RECORDING_TERMINATE_INVALID) {
+		ast_ari_response_error(
+			response, 400, "Bad Request",
+			"terminateOn invalid");
+		return;
+	}
+
+	if (options->if_exists == -1) {
+		ast_ari_response_error(
+			response, 400, "Bad Request",
+			"ifExists invalid");
+		return;
+	}
+
+	if (!ast_get_format_for_file_ext(options->format)) {
+		ast_ari_response_error(
+			response, 422, "Unprocessable Entity",
+			"specified format is unknown on this system");
+		return;
+	}
+
 	recording = stasis_app_control_record(control, options);
 	if (recording == NULL) {
 		switch(errno) {
diff --git a/res/ari/resource_channels.c b/res/ari/resource_channels.c
index b8d59d38b1..f1a9217afb 100644
--- a/res/ari/resource_channels.c
+++ b/res/ari/resource_channels.c
@@ -407,6 +407,13 @@ void ast_ari_record_channel(struct ast_variable *headers,
 		return;
 	}
 
+	if (!ast_get_format_for_file_ext(options->format)) {
+		ast_ari_response_error(
+			response, 422, "Unprocessable Entity",
+			"specified format is unknown on this system");
+		return;
+	}
+
 	recording = stasis_app_control_record(control, options);
 	if (recording == NULL) {
 		switch(errno) {
diff --git a/res/res_ari_bridges.c b/res/res_ari_bridges.c
index f6a3c1c1a7..d34505e2b0 100644
--- a/res/res_ari_bridges.c
+++ b/res/res_ari_bridges.c
@@ -745,6 +745,7 @@ static void ast_ari_record_bridge_cb(
 	case 400: /* Invalid parameters */
 	case 404: /* Bridge not found */
 	case 409: /* Bridge is not in a Stasis application; A recording with the same name already exists on the system and can not be overwritten because it is in progress or ifExists=fail */
+	case 422: /* The format specified is unknown on this system */
 		is_valid = 1;
 		break;
 	default:
diff --git a/res/res_ari_channels.c b/res/res_ari_channels.c
index 8ff4c065c5..79aa88492e 100644
--- a/res/res_ari_channels.c
+++ b/res/res_ari_channels.c
@@ -993,6 +993,7 @@ static void ast_ari_record_channel_cb(
 	case 400: /* Invalid parameters */
 	case 404: /* Channel not found */
 	case 409: /* Channel is not in a Stasis application; the channel is currently bridged with other hcannels; A recording with the same name already exists on the system and can not be overwritten because it is in progress or ifExists=fail */
+	case 422: /* The format specified is unknown on this system */
 		is_valid = 1;
 		break;
 	default:
diff --git a/rest-api/api-docs/bridges.json b/rest-api/api-docs/bridges.json
index 187522826a..3174eaaa37 100644
--- a/rest-api/api-docs/bridges.json
+++ b/rest-api/api-docs/bridges.json
@@ -466,7 +466,11 @@
                         {
                             "code": 409,
                             "reason": "Bridge is not in a Stasis application; A recording with the same name already exists on the system and can not be overwritten because it is in progress or ifExists=fail"
-                        }
+                        },
+						{
+							"code": 422,
+							"reason": "The format specified is unknown on this system"
+						}
                     ]
 				}
 			]
diff --git a/rest-api/api-docs/channels.json b/rest-api/api-docs/channels.json
index a9b55873a5..39dc4e376a 100644
--- a/rest-api/api-docs/channels.json
+++ b/rest-api/api-docs/channels.json
@@ -721,6 +721,10 @@
 						{
 							"code": 409,
 							"reason": "Channel is not in a Stasis application; the channel is currently bridged with other hcannels; A recording with the same name already exists on the system and can not be overwritten because it is in progress or ifExists=fail"
+						},
+						{
+							"code": 422,
+							"reason": "The format specified is unknown on this system"
 						}
 					]
 				}