diff --git a/v1/Application.cfc b/v1/Application.cfc
index 7124b1b..765b7f7 100644
--- a/v1/Application.cfc
+++ b/v1/Application.cfc
@@ -71,7 +71,7 @@
 		
 		//variables.framework.docs={};
 		variables.framework.docs.APIName="Deck API";
-		variables.framework.docs.APIVersion="0.027";
+		variables.framework.docs.APIVersion="0.028";
 		
 		variables.framework.globalHeaders = structNew();
 		variables.framework.globalHeaders["Access-Control-Expose-Headers"] = "Location"; 
diff --git a/v1/lib/rest_api_helper.cfc b/v1/lib/rest_api_helper.cfc
index 3a37616..0ef242a 100644
--- a/v1/lib/rest_api_helper.cfc
+++ b/v1/lib/rest_api_helper.cfc
@@ -3,6 +3,7 @@
     output="true"
     hint="Static helper methods for ReST API">
 	<!--- v0.02 2024-10-15 --->
+	<!--- v0.03 2024-11-27 --->
 	
 	
 <cffunction name="empty2null" 
@@ -270,7 +271,7 @@
 	<cfargument name="title" type="string" required="false" />
 	
 	<cfset var detail = listAppend(#ARGUMENTS.ex.message#,#ARGUMENTS.ex.detail#,": " )/>
-	<cfset var title = structKeyExists(ARGUMENTS,"title") ? #ARGUMENTS.title# : #ARGUMENTS.message# />	
+	<cfset var title = structKeyExists(ARGUMENTS,"title") ? #ARGUMENTS.title# : #ARGUMENTS.ex.message# />	
 	
 	<cfreturn formatMessage(detail, title) />
 </cffunction>	
diff --git a/v1/resources/instance_operation_run.cfc b/v1/resources/instance_operation_run.cfc
index 1ed2db3..6136bdd 100644
--- a/v1/resources/instance_operation_run.cfc
+++ b/v1/resources/instance_operation_run.cfc
@@ -10,33 +10,50 @@
 		<cfargument name="instanceOperationUid" type="string" required=true hint="type:guid"/>
 
 		<cfset local={}/>
-		<cfset local.instanceUid=#createGUID()#/>
+		<!--- <cfset local.instanceUid=#createGUID()#/> --->
 		
 <!--- 		*** Проверить наличие обязательных CFS параметров
 		Создать RFS параметры
-		(валидируем CFS параметры при создании, а не сейчас) --->
+		(валидируем CFS параметры при создании, а не сейчас)
+		Проверить, что операция уже не выполняется
+		--->
 		
 		<cftry>
 			<!---NOT NULL fields--->
 			<cfset this.helper.keyExistsAndValid(arguments, "instanceOperationUid", "guid")/>
-	
+			
+			<!--- Check operation status --->
+			<cfquery name="local.qCheckStarted" result="local.result">
+				select io.dt_submit, io.dt_finish, io.submit_result  
+				from instance_operation io 		
+				where io.instance_operation_uid=<cfqueryparam cfsqltype="cf_sql_other" value="#arguments.instanceOperationUid#" null=#!isValid('guid',arguments.instanceOperationUid)#/>
+			</cfquery>	<!--- <cfdump var=#local.qCheckStarted.dt_finish#/><cfabort/> --->		
+			<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)/>
+			<cfelseif left(local.qCheckStarted.submit_result,1) EQ "2" AND len(local.qCheckStarted.dt_finish EQ 0)><!--- 201 etc --->	
+				<cfreturn representationOf(this.helper.formatMessage("Operation already started", "Parameter creation disabled for started operation")).withStatus(422)/>
+			</cfif>
+			
 			<cfset generateRfsParams(arguments.instanceOperationUid, arguments.usrId)/>
 			<cfset submitJob(arguments.instanceOperationUid)/>
 			
 			<cfcatch type="invalidParamValue">
 				<cfreturn representationOf(this.helper.formatBadRequestError(cfcatch)).withStatus(400)/>
+			</cfcatch>			
+			<cfcatch type="missingDependency">
+				<cfreturn representationOf(this.helper.formatException(cfcatch,"Missing Dependency")).withStatus(424)/>
 			</cfcatch>
 		</cftry> 
 		<!--- <cfreturn representationOf("Not Implemented yet").withStatus(501)/> --->
 		
+		<cfset generateRfsParams(arguments.instanceOperationUid)/>
 		
-
-		<cfreturn noData()
-			.withHeaders({location: "./#local.instanceUid#"})
-			.withStatus(201, "Created") 
-		/>
+<!---  --->	
+		<cfreturn noData().withStatus(201, "Created") />
 	</cffunction>
 	
+	
+	
 	<cffunction name="generateRfsParams">
 		<cfargument name="instanceOperationUid" type="guid"/>
 		<cfargument name="usrId" type="numeric"/>		
@@ -129,21 +146,36 @@
 			where instance_operation_uid=<cfqueryparam cfsqltype="cf_sql_other" value=#arguments.instanceOperationUid#/>
 		</cfquery>
 		
-		<cfhttp method="post" 
-			url="#qInstanceOperation.url#" 
-			multipart=true 
-			multipartType="form-data"
-			timeout="3"
-			charset="utf-8"	
-			result="orchestrator"
-		>	
-			<cfhttpparam type="HEADER" name="Authorization" value="#request.ORCHESTRATOR_AUTH#"/>
-			<cfhttpparam type="HEADER" name="Accept" value="application/json"/>
-			<cfhttpparam type="formfield" name="delay"  value="0sec"/>
-			<cfloop query="qInstanceOperationParam">
-				<cfhttpparam type="formfield" name="#param#"  value="#param_value#"/>
-			</cfloop>		
-		</cfhttp>
+		
+		
+		<cftry>
+			<cfhttp method="post" 
+				url="#qInstanceOperation.url#" 
+				multipart=true 
+				multipartType="form-data"
+				timeout="3"
+				charset="utf-8"	
+				result="orchestrator"
+			>	
+				<cfhttpparam type="HEADER" name="Authorization" value="#request.ORCHESTRATOR_AUTH#"/>
+				<cfhttpparam type="HEADER" name="Accept" value="application/json"/>
+				<cfhttpparam type="formfield" name="delay"  value="0sec"/>
+				<cfloop query="qInstanceOperationParam">
+					<cfhttpparam type="formfield" name="#param#"  value="#param_value#"/>
+				</cfloop>		
+			</cfhttp>
+			
+			<cfcatch type="any">
+				<cfthrow message="Cannot initiate connection to the orchestrator #cfcatch.message#" detail="#cfcatch.detail#"/>
+				<!--- <cfdump var=#qInstanceOperation#/>
+				<cfabort/> --->
+			</cfcatch>
+		</cftry>
+		
+		<cfif len(orchestrator.errorDetail)>
+			<cfthrow type="missingDependency" message="Orchestrator communication error" detail="#orchestrator.errorDetail#"/>
+			<!--- лучше бы возвращать 503 или 424 --->
+		</cfif>
 		
 		<cfquery name="qMarkOperationSubmit">
 			update instance_operation