diff --git a/modules/pubmatic/openwrap/beforevalidationhook.go b/modules/pubmatic/openwrap/beforevalidationhook.go
index 3705c424683..ee9bfb60ca8 100644
--- a/modules/pubmatic/openwrap/beforevalidationhook.go
+++ b/modules/pubmatic/openwrap/beforevalidationhook.go
@@ -47,6 +47,14 @@ func (m OpenWrap) handleBeforeValidationHook(
 		}
 	}()
 
+	// return prebid validation error
+	if len(payload.BidRequest.Imp) == 0 || (payload.BidRequest.Site == nil && payload.BidRequest.App == nil) {
+		result.Reject = false
+		m.metricEngine.RecordBadRequests(rCtx.Endpoint, getPubmaticErrorCode(nbr.InvalidRequestExt))
+		m.metricEngine.RecordNobidErrPrebidServerRequests(rCtx.PubIDStr, nbr.InvalidRequestExt)
+		return result, nil
+	}
+
 	//Do not execute the module for requests processed in SSHB(8001)
 	if rCtx.Sshb == "1" {
 		result.Reject = false
diff --git a/modules/pubmatic/openwrap/beforevalidationhook_test.go b/modules/pubmatic/openwrap/beforevalidationhook_test.go
index 0dd6f688739..1806961a26a 100644
--- a/modules/pubmatic/openwrap/beforevalidationhook_test.go
+++ b/modules/pubmatic/openwrap/beforevalidationhook_test.go
@@ -1874,6 +1874,7 @@ func TestOpenWrap_handleBeforeValidationHook(t *testing.T) {
 						},
 					},
 				},
+				bidrequest: json.RawMessage(`{"id":"123-456-789","imp":[{"id":"123","banner":{"format":[{"w":728,"h":90},{"w":300,"h":250}],"w":700,"h":900},"video":{"mimes":["video/mp4","video/mpeg"],"w":640,"h":480},"tagid":"adunit","bidfloor":4.3,"bidfloorcur":"USD","ext":{"bidder":{"pubmatic":{"keywords":[{"key":"pmzoneid","value":["val1","val2"]}]}},"prebid":{}}}],"site":{"domain":"test.com","page":"www.test.com","publisher":{"id":"5890"}},"device":{"ua":"Mozilla/5.0(X11;Linuxx86_64)AppleWebKit/537.36(KHTML,likeGecko)Chrome/52.0.2743.82Safari/537.36","ip":"123.145.167.10"},"user":{"id":"119208432","buyeruid":"1rwe432","yob":1980,"gender":"F","geo":{"country":"US","region":"CA","metro":"90001","city":"Alamo"}},"wseat":["Wseat_0","Wseat_1"],"bseat":["Bseat_0","Bseat_1"],"cur":["cur_0","cur_1"],"wlang":["Wlang_0","Wlang_1"],"bcat":["bcat_0","bcat_1"],"badv":["badv_0","badv_1"],"bapp":["bapp_0","bapp_1"],"source":{"ext":{"omidpn":"MyIntegrationPartner","omidpv":"7.1"}},"ext":{"prebid":{},"wrapper":{"test":123,"profileid":123,"versionid":1,"wiid":"test_display_wiid"}}}`),
 			},
 			want: hookstage.HookResult[hookstage.BeforeValidationRequestPayload]{
 				Reject: false,
@@ -1882,8 +1883,9 @@ func TestOpenWrap_handleBeforeValidationHook(t *testing.T) {
 		{
 			name: "empty_module_context",
 			args: args{
-				ctx:       context.Background(),
-				moduleCtx: hookstage.ModuleInvocationContext{},
+				ctx:        context.Background(),
+				moduleCtx:  hookstage.ModuleInvocationContext{},
+				bidrequest: json.RawMessage(`{"id":"123-456-789","imp":[{"id":"123","banner":{"format":[{"w":728,"h":90},{"w":300,"h":250}],"w":700,"h":900},"video":{"mimes":["video/mp4","video/mpeg"],"w":640,"h":480},"tagid":"adunit","bidfloor":4.3,"bidfloorcur":"USD","ext":{"bidder":{"pubmatic":{"keywords":[{"key":"pmzoneid","value":["val1","val2"]}]}},"prebid":{}}}],"site":{"domain":"test.com","page":"www.test.com","publisher":{"id":"5890"}},"device":{"ua":"Mozilla/5.0(X11;Linuxx86_64)AppleWebKit/537.36(KHTML,likeGecko)Chrome/52.0.2743.82Safari/537.36","ip":"123.145.167.10"},"user":{"id":"119208432","buyeruid":"1rwe432","yob":1980,"gender":"F","geo":{"country":"US","region":"CA","metro":"90001","city":"Alamo"}},"wseat":["Wseat_0","Wseat_1"],"bseat":["Bseat_0","Bseat_1"],"cur":["cur_0","cur_1"],"wlang":["Wlang_0","Wlang_1"],"bcat":["bcat_0","bcat_1"],"badv":["badv_0","badv_1"],"bapp":["bapp_0","bapp_1"],"source":{"ext":{"omidpn":"MyIntegrationPartner","omidpv":"7.1"}},"ext":{"prebid":{},"wrapper":{"test":123,"profileid":123,"versionid":1,"wiid":"test_display_wiid"}}}`),
 			},
 			fields: fields{
 				cache:        mockCache,
@@ -1904,6 +1906,7 @@ func TestOpenWrap_handleBeforeValidationHook(t *testing.T) {
 						"test_rctx": "test",
 					},
 				},
+				bidrequest: json.RawMessage(`{"id":"123-456-789","imp":[{"id":"123","banner":{"format":[{"w":728,"h":90},{"w":300,"h":250}],"w":700,"h":900},"video":{"mimes":["video/mp4","video/mpeg"],"w":640,"h":480},"tagid":"adunit","bidfloor":4.3,"bidfloorcur":"USD","ext":{"bidder":{"pubmatic":{"keywords":[{"key":"pmzoneid","value":["val1","val2"]}]}},"prebid":{}}}],"site":{"domain":"test.com","page":"www.test.com","publisher":{"id":"5890"}},"device":{"ua":"Mozilla/5.0(X11;Linuxx86_64)AppleWebKit/537.36(KHTML,likeGecko)Chrome/52.0.2743.82Safari/537.36","ip":"123.145.167.10"},"user":{"id":"119208432","buyeruid":"1rwe432","yob":1980,"gender":"F","geo":{"country":"US","region":"CA","metro":"90001","city":"Alamo"}},"wseat":["Wseat_0","Wseat_1"],"bseat":["Bseat_0","Bseat_1"],"cur":["cur_0","cur_1"],"wlang":["Wlang_0","Wlang_1"],"bcat":["bcat_0","bcat_1"],"badv":["badv_0","badv_1"],"bapp":["bapp_0","bapp_1"],"source":{"ext":{"omidpn":"MyIntegrationPartner","omidpv":"7.1"}},"ext":{"prebid":{},"wrapper":{"test":123,"profileid":123,"versionid":1,"wiid":"test_display_wiid"}}}`),
 			},
 			fields: fields{
 				cache:        mockCache,
@@ -1926,6 +1929,7 @@ func TestOpenWrap_handleBeforeValidationHook(t *testing.T) {
 						},
 					},
 				},
+				bidrequest: json.RawMessage(`{"id":"123-456-789","imp":[{"id":"123","banner":{"format":[{"w":728,"h":90},{"w":300,"h":250}],"w":700,"h":900},"video":{"mimes":["video/mp4","video/mpeg"],"w":640,"h":480},"tagid":"adunit","bidfloor":4.3,"bidfloorcur":"USD","ext":{"bidder":{"pubmatic":{"keywords":[{"key":"pmzoneid","value":["val1","val2"]}]}},"prebid":{}}}],"site":{"domain":"test.com","page":"www.test.com","publisher":{"id":"5890"}},"device":{"ua":"Mozilla/5.0(X11;Linuxx86_64)AppleWebKit/537.36(KHTML,likeGecko)Chrome/52.0.2743.82Safari/537.36","ip":"123.145.167.10"},"user":{"id":"119208432","buyeruid":"1rwe432","yob":1980,"gender":"F","geo":{"country":"US","region":"CA","metro":"90001","city":"Alamo"}},"wseat":["Wseat_0","Wseat_1"],"bseat":["Bseat_0","Bseat_1"],"cur":["cur_0","cur_1"],"wlang":["Wlang_0","Wlang_1"],"bcat":["bcat_0","bcat_1"],"badv":["badv_0","badv_1"],"bapp":["bapp_0","bapp_1"],"source":{"ext":{"omidpn":"MyIntegrationPartner","omidpv":"7.1"}},"ext":{"prebid":{},"wrapper":{"test":123,"profileid":123,"versionid":1,"wiid":"test_display_wiid"}}}`),
 			},
 			want: hookstage.HookResult[hookstage.BeforeValidationRequestPayload]{
 				Reject: false,
@@ -2531,6 +2535,56 @@ func TestOpenWrap_handleBeforeValidationHook(t *testing.T) {
 			wantErr:              false,
 			isRequestNotRejected: true,
 		},
+		{
+			name: "prebid-validation-errors-imp-missing",
+			args: args{
+				ctx: context.Background(),
+				moduleCtx: hookstage.ModuleInvocationContext{
+					ModuleContext: hookstage.ModuleContext{
+						"rctx": models.RequestCtx{
+							PubIDStr: "1234",
+							Endpoint: models.EndpointV25,
+						},
+					},
+				},
+				bidrequest: json.RawMessage(`{}`),
+			},
+			fields: fields{
+				cache:        mockCache,
+				metricEngine: mockEngine,
+			},
+			setup: func() {
+				mockEngine.EXPECT().RecordBadRequests(models.EndpointV25, 18)
+				mockEngine.EXPECT().RecordNobidErrPrebidServerRequests("1234", 604)
+			},
+			want:    hookstage.HookResult[hookstage.BeforeValidationRequestPayload]{},
+			wantErr: false,
+		},
+		{
+			name: "prebid-validation-errors-site-and-app-missing",
+			args: args{
+				ctx: context.Background(),
+				moduleCtx: hookstage.ModuleInvocationContext{
+					ModuleContext: hookstage.ModuleContext{
+						"rctx": models.RequestCtx{
+							PubIDStr: "1234",
+							Endpoint: models.EndpointV25,
+						},
+					},
+				},
+				bidrequest: json.RawMessage(`{"id":"123-456-789","imp":[{"id":"123","banner":{"format":[{"w":728,"h":90},{"w":300,"h":250}],"w":700,"h":900},"video":{"mimes":["video/mp4","video/mpeg"],"w":640,"h":480},"tagid":"adunit","bidfloor":4.3,"bidfloorcur":"USD","ext":{"bidder":{"pubmatic":{"keywords":[{"key":"pmzoneid","value":["val1","val2"]}]}},"prebid":{}}}],"device":{"ua":"Mozilla/5.0(X11;Linuxx86_64)AppleWebKit/537.36(KHTML,likeGecko)Chrome/52.0.2743.82Safari/537.36","ip":"123.145.167.10"},"user":{"id":"119208432","buyeruid":"1rwe432","yob":1980,"gender":"F","geo":{"country":"US","region":"CA","metro":"90001","city":"Alamo"}},"wseat":["Wseat_0","Wseat_1"],"bseat":["Bseat_0","Bseat_1"],"cur":["cur_0","cur_1"],"wlang":["Wlang_0","Wlang_1"],"bcat":["bcat_0","bcat_1"],"badv":["badv_0","badv_1"],"bapp":["bapp_0","bapp_1"],"source":{"ext":{"omidpn":"MyIntegrationPartner","omidpv":"7.1"}},"ext":{"prebid":{},"wrapper":{"test":123,"profileid":123,"versionid":1,"wiid":"test_display_wiid"}}}`),
+			},
+			fields: fields{
+				cache:        mockCache,
+				metricEngine: mockEngine,
+			},
+			setup: func() {
+				mockEngine.EXPECT().RecordBadRequests(models.EndpointV25, 18)
+				mockEngine.EXPECT().RecordNobidErrPrebidServerRequests("1234", 604)
+			},
+			want:    hookstage.HookResult[hookstage.BeforeValidationRequestPayload]{},
+			wantErr: false,
+		},
 	}
 	for _, tt := range tests {
 		t.Run(tt.name, func(t *testing.T) {