diff --git a/static/js/shop/ProductCartItem.jsx b/static/js/shop/ProductCartItem.jsx
index 9a0aca9..7831f29 100644
--- a/static/js/shop/ProductCartItem.jsx
+++ b/static/js/shop/ProductCartItem.jsx
@@ -5,6 +5,7 @@ import {OverlayTrigger} from "react-bootstrap";
 import {DialogPopup} from "./options/DialogPopup.jsx";
 import {productStyle} from "./utils";
 import {Resources} from "./Resources.jsx";
+import {Warnings} from "./Warnings";
 
 /**
  * Component that renders a product.
@@ -132,21 +133,7 @@ export class ProductCartItem extends PureComponent {
 
                         <div className="progress-container warning d-flex justify-content-evenly">
                             {warning &&
-                                (<OverlayTrigger
-                                    placement="bottom"
-                                    trigger={['click', 'hover', 'focus']}
-                                    overlay={
-                                        ({arrowProps, hasDoneInitialMeasure, show, ...props}) => (
-                                            <div className="k-popup-warning" {...props}>
-                                                <p className="rule warning">
-                                                    <i>{warning.message}</i>
-                                                </p>
-                                            </div>)
-                                    }
-                                    rootClose
-                                >
-                                    <img className="alert-warning" src={`/images${warning.icon}`}/>
-                                </OverlayTrigger>)
+                                (<Warnings warnings={warning} />)
                             }
 
                             {options && (
diff --git a/static/js/shop/Warnings.jsx b/static/js/shop/Warnings.jsx
new file mode 100644
index 0000000..1a8bb0c
--- /dev/null
+++ b/static/js/shop/Warnings.jsx
@@ -0,0 +1,25 @@
+import {OverlayTrigger} from "react-bootstrap";
+import React from "react";
+
+
+
+export function Warnings({warnings}) {
+    return (
+        <OverlayTrigger
+            placement="bottom"
+            trigger={['click', 'hover', 'focus']}
+            overlay={
+                ({arrowProps, hasDoneInitialMeasure, show, ...props}) => (
+                    <div className="k-popup-warning" {...props}>
+
+                        <p className="rule warning">
+                            <i>{warnings.message}</i>
+                        </p>
+                    </div>)
+            }
+            rootClose
+        >
+            <img className="alert-warning" src={`/images${warning.icon}`}/>
+        </OverlayTrigger>
+    )
+}
\ No newline at end of file
diff --git a/static/js/shop/count_resources.js b/static/js/shop/count_resources.js
index 9aaf3a2..ff39334 100644
--- a/static/js/shop/count_resources.js
+++ b/static/js/shop/count_resources.js
@@ -1,47 +1,51 @@
-function EEMCounter(data, index) {
-    const process_slots = (item) => {
-        if (!item.options_data
-            || item.options_data.ext_pwr === false
-            || item.options_data.mono_eem === false
-        )
-            return item.slotOccupied;
-        else if (item.options_data.ext_pwr === true)
-            return 0;
-        else if (item.options_data.mono_eem === true || item.options_data.n_eem === "1 EEM")
-            return 1;
-        else if (item.options_data.n_eem === "3 EEM")
-            return 3;
 
-        return item.slotOccupied || 0;
-    }
+export const count_item_occupied_eem = (item) => {
+    if (!item.options_data
+        || item.options_data.ext_pwr === false
+        || item.options_data.mono_eem === false
+    )
+        return item.slotOccupied;
+    else if (item.options_data.ext_pwr === true)
+        return 0;
+    else if (item.options_data.mono_eem === true || item.options_data.n_eem === "1 EEM")
+        return 1;
+    else if (item.options_data.n_eem === "3 EEM")
+        return 3;
+
+    return item.slotOccupied || 0;
+}
+
+export const count_item_occupied_clock = (item) => {
+    return (item.options_data && item.options_data.ext_clk === true) ? 0 : (item.clockOccupied || 0);
+}
+
+export const count_item_occupied_idc = (item) => {
+    return item.idcOccupied || 0;
+}
+
+function EEMCounter(data, index) {
     let count = 0;
     for (let i = index + 1; i < data.length; i++) {
-        if (data[i].resources.filter((value, _i) => value.name === "eem").length > 0) break;
-        count += process_slots(data[i]);
+        if (!!data[i].resources.find((value, _i) => value.name === "eem")) break;
+        count += count_item_occupied_eem(data[i]);
     }
     return count;
 }
 
 function ClockCounter(data, index) {
-    const process_slots = (item) => {
-        return (item.options_data && item.options_data.ext_clk === true) ? 0 : (item.clockOccupied || 0);
-    }
     let count = 0;
     for (let i = index + 1; i < data.length; i++) {
-        if (data[i].resources.filter((value, _i) => value.name === "clk").length > 0) break;
-        count += process_slots(data[i]);
+        if (!!data[i].resources.find((value, _i) => value.name === "clk")) break;
+        count += count_item_occupied_clock(data[i]);
     }
     return count;
 }
 
 function IDCCounter(data, index) {
-    const process_slots = (item) => {
-        return item.idcOccupied || 0;
-    }
     let count = 0;
     for (let i = index + 1; i < data.length; i++) {
-        if (data[i].resources.filter((value, _i) => value.name === "idc").length > 0) break;
-        count += process_slots(data[i]);
+        if (!!data[i].resources.find((value, _i) => value.name === "idc")) break;
+        count += count_item_occupied_idc(data[i]);
     }
     return count;
 }
diff --git a/static/js/shop/warnings.js b/static/js/shop/warnings.js
index 0052716..6a7b662 100644
--- a/static/js/shop/warnings.js
+++ b/static/js/shop/warnings.js
@@ -3,4 +3,69 @@
  * First idea - there should be either definitive list of available warnings,
  * or defined as some json logic leading to the warning message(s), similar way how FillExtData works.
  * Second - resources indicator should be separate component
- */
\ No newline at end of file
+ */
+
+import {count_item_occupied_eem, count_item_occupied_clock, count_item_occupied_idc} from "./count_resources";
+
+const Levels = {
+    "reminder": {priority: 0, icon: '/images/shop/icon-reminder.svg'},
+    "warning": {priority: 1, icon: '/images/shop/icon-warning.svg'},
+}
+
+const find_in_counters = (counters, name) => {
+    return counters.find((element) => element.name === name)
+}
+
+const find_previous_source = (data, index, source) => {
+    return data.slice(0, index).find((element) => {element.resources.find((value) => value.name === source)})
+}
+
+const not_enough_resource_trigger = (name) => {
+    return (_data, _index, counters) => {
+        const eem = find_in_counters(counters, name);
+        return eem.occupied > eem.max;
+    }
+}
+
+const no_source_trigger = (name) => {
+    return (data, index, _counters) => {
+        const occupied = count_item_occupied_eem(data[index]);
+        if (occupied > 0)
+            return !!find_previous_source(data, index, name);
+        return false;
+    }
+}
+
+const Types = {
+    "eem_resource": {
+        level: "warning",
+        trigger: not_enough_resource_trigger("eem"),
+        message: "Insufficient EEM connectors"
+    },
+    "no_eem_source" : {
+        level: "warning",
+        trigger: no_source_trigger("eem"),
+        message: 'This card needs a card that provides a EEM connector (e.g. Kasli) at its left.'
+    },
+    "idc_resource": {
+        level: "warning",
+        trigger: not_enough_resource_trigger("idc"),
+        message: "Insufficient IDC connectors."
+    },
+    "no_idc_source" : {
+        level: "warning",
+        trigger: no_source_trigger("idc"),
+        message: 'Should be after a Zotino or a HD68-IDC or with another IDC-BNC.'
+    },
+    "clk_resource": {
+        level: "warning",
+        trigger: not_enough_resource_trigger("clk"),
+        message: "Insufficient clock connectors."
+    },
+    "no_clk_source" : {
+        level: "warning",
+        trigger: no_source_trigger("clk"),
+        message: 'This card needs either a card that provides a clock source (e.g. Kasli or Clocker) at its left or use external clock source.'
+    },
+}
+