diff --git a/v1/Application.cfc b/v1/Application.cfc
index bc56a03..1356c2a 100644
--- a/v1/Application.cfc
+++ b/v1/Application.cfc
@@ -57,7 +57,7 @@
 		
 		//variables.framework.docs={};
 		variables.framework.docs.APIName="svc-api";
-		variables.framework.docs.APIVersion="0.218";   /*$ git config --global --unset user.password*/
+		variables.framework.docs.APIVersion="0.219";   /*$ git config --global --unset user.password*/
 		
 		variables.framework.globalHeaders = structNew();
 		variables.framework.globalHeaders["Access-Control-Expose-Headers"] = "Location"; 
diff --git a/v1/resources/instance_operation.cfc b/v1/resources/instance_operation.cfc
index 9bae79d..cd43507 100644
--- a/v1/resources/instance_operation.cfc
+++ b/v1/resources/instance_operation.cfc
@@ -164,9 +164,6 @@
 				<m:field>iop.note</m:field>				
 				<m:field>sop.config::text as config</m:field>
 				<m:field>null as nested_ref_data</m:field><!--- placeholder for future data --->
-				
-				
-				
 				<m:field formatter=#request.castToBool#>sop.is_sensitive</m:field>
 			</m:field_set>
 			from svc_operation_cfs_param sop
diff --git a/v1/resources/instance_operation_run.cfc b/v1/resources/instance_operation_run.cfc
index da00019..33a9c67 100644
--- a/v1/resources/instance_operation_run.cfc
+++ b/v1/resources/instance_operation_run.cfc
@@ -43,11 +43,17 @@
 				where io.instance_operation_uid=<cfqueryparam cfsqltype="cf_sql_other" value="#arguments.instanceOperationUid#" null=#!isValid('guid',arguments.instanceOperationUid)#/>
 			</cfquery>
 			
+			<cfquery name="local.qInstance" result="local.result">
+				select io.instance_uid 
+				from instance_operation io 
+				where io.instance_operation_uid=<cfqueryparam cfsqltype="cf_sql_other" value="#arguments.instanceOperationUid#" null=#!isValid('guid',arguments.instanceOperationUid)#/>
+			</cfquery>
+			
 			<!--- Check operation status, do not start already started (*** consider timeout and cancelling timed out operations here) --->
 			<cfquery name="local.qCheckStarted" result="local.result">
 				select io.dt_submit, io.dt_finish, io.dt_start, io.submit_result, io.status_url  
 				from instance_operation io 		
-				where io.instance_operation_uid=<cfqueryparam cfsqltype="cf_sql_other" value="#arguments.instanceOperationUid#" null=#!isValid('guid',arguments.instanceOperationUid)#/>
+				where io.instance_operation_uid=<cfqueryparam cfsqltype="cf_sql_other" value="#local.qInstance.instance_uid#" null=#!isValid('guid',local.qInstance.instance_uid)#/>
 			</cfquery>	<!--- <cfdump var=#local.qCheckStarted.dt_finish#/><cfabort/> --->	
 			
 			<!--- 
@@ -57,10 +63,17 @@
 			Возможно, эту логику нужно воспроизвести на фронте
 			--->
 			<cfif local.qCheckStarted.recordCount EQ 0>				
-				<cfreturn representationOf(this.helper.formatMessage("There is no configured instance operation with uid #arguments.instanceOperationUid#","Instance operation not found")).withStatus(404)/>
+				<cfreturn representationOf(this.helper.formatMessage(
+					"There is no configured instance operation with uid #arguments.instanceOperationUid#",
+					"Instance operation not found")
+					).withStatus(404)/>
 			<cfelseif left(local.qCheckStarted.submit_result,1) EQ "2" AND len(local.qCheckStarted.dt_finish) EQ 0><!--- 201 etc --->
-				<cfif getJobStatus(local.qCheckStarted.status_url) NEQ 'FAILED'>
-					<cfreturn representationOf(this.helper.formatMessage("Operation already started", "Parameter creation disabled for started operation")).withStatus(422)/>
+				<cfset var jobStatus = getJobStatus(local.qCheckStarted.status_url)/>
+				<cfif jobStatus NEQ 'FAILED'>
+					<cfreturn representationOf(this.helper.formatMessage(
+					"There is a started operation on this instance", 
+					"Concurrent operations are not supported (job status: #jobStatus#)")
+					).withStatus(422)/>
 				</cfif>
 			</cfif>
 			<!--- Check CFS parameters at least for existence