diff --git a/v1/Application.cfc b/v1/Application.cfc
index 9cf989b..3b9163e 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="0.207";   /*$ git config --global --unset user.password*/
+		variables.framework.docs.APIVersion="0.208";   /*$ git config --global --unset user.password*/
 		
 		variables.framework.globalHeaders = structNew();
 		variables.framework.globalHeaders["Access-Control-Expose-Headers"] = "Location"; 
diff --git a/v1/resources/instance_ls.cfc b/v1/resources/instance_ls.cfc
index 2bcdd7f..554527f 100644
--- a/v1/resources/instance_ls.cfc
+++ b/v1/resources/instance_ls.cfc
@@ -354,8 +354,20 @@
 		<cfargument name="usrUid" type="string" required=true hint="type:guid"/>		
 		<cfargument name="companyUid" type="string" required=true hint="type:guid"/>	 --->
 		<!--- оказывается, их можно и не декларировать	 --->
-
+		
+		
+		<cfif !structKeyExists(arguments, "specificationId")>
+			<cfreturn representationOf("arguments.specificationId not defined").withStatus(500)/>
+		</cfif>		
+		<cfif !isValid("integer", arguments.specificationId)>
+			<cfreturn representationOf("arguments.specificationId is not a valid integer (specification not defined)").withStatus(500)/>
+		</cfif>		
+		<cfif !(arguments.specificationId GT 0)>
+			<cfreturn representationOf("specification not defined (arguments.specificationId should be a posititve integer)").withStatus(500)/>
+		</cfif>
+		
 		<cfset var local={}/>
+		
 
 		<cfset local.instanceUid=#createGUID()#/>