diff --git a/test/int_bulkblocks.go b/test/int_bulkblocks.go
index 761b7d3..371ff80 100644
--- a/test/int_bulkblocks.go
+++ b/test/int_bulkblocks.go
@@ -1,10 +1,12 @@
 package main
 
 import (
+	"fmt"
 	"net/http"
 	"net/url"
 	"testing"
 
+	"github.com/dmwm/dbs2go/dbs"
 	"github.com/dmwm/dbs2go/web"
 )
 
@@ -106,3 +108,38 @@ func getBulkBlocksLargeFileLumiInsertTestTable(t *testing.T) EndpointTestCase {
 		},
 	}
 }
+
+// test that we will get DBSError when use the same block with bulkblocks API
+func bulkblocksTheSameBlockInsertTestTable(t *testing.T) EndpointTestCase {
+	// there are multiple blocks to insert, but everything is started from parent blocks
+	bName := TestData.ParentStepchainBlock
+	reason := fmt.Sprintf("Block %s already exists", bName)
+	msg := "Data already exist in DBS"
+	dbsError := dbs.DBSError{
+		Function: "dbs.bulkblocks.checkBlockExist",
+		Code:     dbs.BlockAlreadyExists,
+		Reason:   reason,
+		Message:  msg,
+	}
+	hrec := createHTTPError("POST", "/dbs/bulkblocks")
+	errorResp := createServerErrorResponse(hrec, &dbsError)
+	return EndpointTestCase{
+		description:     "Test concurrent bulkblocks with the same block name twice",
+		defaultHandler:  web.BulkBlocksHandler,
+		defaultEndpoint: "/dbs/bulkblocks",
+		testCases: []testCase{
+			{
+				description:          "Test POST with the same block",
+				serverType:           "DBSWriter",
+				method:               "POST",
+				concurrentBulkBlocks: true,
+				input:                BulkBlocksData.ConcurrentParentData,
+				output: []Response{
+					errorResp,
+				},
+				handler:  web.BulkBlocksHandler,
+				respCode: http.StatusBadRequest,
+			},
+		},
+	}
+}
diff --git a/test/integration_cases.go b/test/integration_cases.go
index d4e6d1c..e61ea15 100644
--- a/test/integration_cases.go
+++ b/test/integration_cases.go
@@ -570,6 +570,7 @@ func LoadTestCases(t *testing.T, filepath string, bulkblockspath string, largeBu
 	fileParentsTestTable := getFileParentsTestTable(t)
 	largeFileLumiInsertTestTable := getBulkBlocksLargeFileLumiInsertTestTable(t)
 	filesReaderAfterChunkTestTable := getFileLumiChunkTestTable(t)
+	theSameBlockWithBulkblocks := bulkblocksTheSameBlockInsertTestTable(t)
 
 	endpointTestCases = append(
 		endpointTestCases,
@@ -599,6 +600,7 @@ func LoadTestCases(t *testing.T, filepath string, bulkblockspath string, largeBu
 		fileParentsTestTable,
 		largeFileLumiInsertTestTable,
 		filesReaderAfterChunkTestTable,
+		theSameBlockWithBulkblocks,
 	)
 	// endpointTestCases = append(endpointTestCases, largeFileLumiInsertTestTable)
 	// endpointTestCases = append(endpointTestCases, filesReaderAfterChunkTestTable)
diff --git a/test/integration_test.go b/test/integration_test.go
index 7359717..3c56ed9 100644
--- a/test/integration_test.go
+++ b/test/integration_test.go
@@ -94,7 +94,8 @@ func runTestWorkflow(t *testing.T, c EndpointTestCase) {
 				var d []dbs.Record
 				// decode and verify the GET request
 				// Also handles fileArray using POST to fetch data
-				if v.method == "GET" || (v.method == "POST" && strings.Contains(endpoint, "fileArray")) {
+				if v.method == "GET" || (v.method == "POST" && strings.Contains(endpoint, "fileArray")) || (v.method == "POST" && strings.Contains(endpoint, "bulkblocks")) {
+					//                 if v.method == "GET" || (v.method == "POST" && strings.Contains(endpoint, "fileArray")) {
 					err = json.NewDecoder(r.Body).Decode(&d)
 					if err != nil {
 						t.Fatalf("Failed to decode body, %v", err)
@@ -108,6 +109,9 @@ func runTestWorkflow(t *testing.T, c EndpointTestCase) {
 				} else if v.method == "POST" {
 					rURL := parseURL(t, server.URL, endpoint, v.params)
 					rr, err := respRecorder("GET", rURL.RequestURI(), nil, handler)
+					// VK: why we use respRecorder with GET method here?
+					//     I would expect something like:
+					//     rr, err := respRecorder("POST", endpoint, reader, handler)
 					if err != nil {
 						t.Error(err)
 					}