diff --git a/Content.Client/SS220/Contractor/UI/ContractorPDAMenu.xaml b/Content.Client/SS220/Contractor/UI/ContractorPDAMenu.xaml
index 2411faf073bd07..f6ac92b103ac37 100644
--- a/Content.Client/SS220/Contractor/UI/ContractorPDAMenu.xaml
+++ b/Content.Client/SS220/Contractor/UI/ContractorPDAMenu.xaml
@@ -18,7 +18,7 @@
                 <ui220:SpriteButton Name="WithdrawButton" Margin="0 133 255 0" VerticalAlignment="Top" SetSize="138 35" StyleClasses="ContractorWithdrawButton"/>
                 <ui220:SpriteButton Name="ContractsButton" Margin="0 218 269 0" VerticalAlignment="Top" MaxSize="138 35" StyleClasses="ContractorContractsButton"/>
                 <ui220:SpriteButton Name="HubButton" Margin="20 218 0 0" VerticalAlignment="Top" MaxSize="138 35" StyleClasses="ContractorHubButton"/>
-                <ui220:SpriteButton Name="ExecutionButton" Access="Public" Margin="321 184 0 0" VerticalAlignment="Top" MaxSize="138 40" StyleClasses="ContractorExecutionButton"/>
+                <ui220:SpriteButton Name="ExecutionButton" Access="Public" Disabled="True" Margin="321 184 0 0" VerticalAlignment="Top" MaxSize="138 40" StyleClasses="ContractorExecutionButton"/>
                 <ScrollContainer Name="ContractsList" Margin="51 260 50 51" VScrollEnabled="True" HorizontalExpand="True" VerticalExpand="True" HScrollEnabled="False">
                     <BoxContainer Name="ContractsListPanel" Orientation="Vertical" Access="Public" SeparationOverride="5"  HorizontalExpand="True" VerticalExpand="False"/>
                     <BoxContainer Name="HubPanel" Visible="False" Orientation="Vertical" Access="Public" SeparationOverride="5"  HorizontalExpand="True" VerticalExpand="False"/>
diff --git a/Content.Server/Store/Conditions/BuyBeforeCondition.cs b/Content.Server/Store/Conditions/BuyBeforeCondition.cs
index fcfb5f92c9d070..2800ecb808a7c7 100644
--- a/Content.Server/Store/Conditions/BuyBeforeCondition.cs
+++ b/Content.Server/Store/Conditions/BuyBeforeCondition.cs
@@ -1,3 +1,4 @@
+using System.Linq;
 using Content.Shared.Store;
 using Content.Shared.Store.Components;
 using Robust.Shared.Prototypes;
@@ -6,11 +7,19 @@ namespace Content.Server.Store.Conditions;
 
 public sealed partial class BuyBeforeCondition : ListingCondition
 {
+    //ss220 blocking all listings, if any other listing was bought start
     /// <summary>
     ///     Required listing(s) needed to purchase before this listing is available
     /// </summary>
-    [DataField(required: true)]
-    public HashSet<ProtoId<ListingPrototype>> Whitelist;
+    [DataField]
+    public HashSet<ProtoId<ListingPrototype>>? Whitelist;
+
+    /// <summary>
+    /// If true, block to buy listing if any other listing was bought
+    /// </summary>
+    [DataField]
+    public bool BlacklistAll;
+    //ss220 blocking all listings, if any other listing was bought end
 
     /// <summary>
     ///     Listing(s) that if bought, block this purchase, if any.
@@ -24,7 +33,15 @@ public override bool Condition(ListingConditionArgs args)
 
         var allListings = storeComp.FullListingsCatalog;
 
-        var purchasesFound = false;
+        //ss220 blocking all listings, if any other listing was bought start
+        if (BlacklistAll)
+        {
+            if (allListings.Any(listing => listing.PurchaseAmount > 0))
+                return false;
+        }
+
+        var purchasesFound = true;
+        //ss220 blocking all listings, if any other listing was bought end
 
         if (Blacklist != null)
         {
@@ -38,17 +55,22 @@ public override bool Condition(ListingConditionArgs args)
             }
         }
 
-        foreach (var requiredListing in Whitelist)
+        //ss220 blocking all listings, if any other listing was bought start
+        if (Whitelist != null)
         {
-            foreach (var listing in allListings)
+            foreach (var requiredListing in Whitelist)
             {
-                if (listing.ID == requiredListing.Id)
+                foreach (var listing in allListings)
                 {
-                    purchasesFound = listing.PurchaseAmount > 0;
-                    break;
+                    if (listing.ID == requiredListing.Id)
+                    {
+                        purchasesFound = listing.PurchaseAmount > 0;
+                        break;
+                    }
                 }
             }
         }
+        //ss220 blocking all listings, if any other listing was bought end
 
         return purchasesFound;
     }
diff --git a/Resources/Prototypes/SS220/Catalog/uplink_catalog.yml b/Resources/Prototypes/SS220/Catalog/uplink_catalog.yml
index c981095a2f5554..41905dfd3889e4 100644
--- a/Resources/Prototypes/SS220/Catalog/uplink_catalog.yml
+++ b/Resources/Prototypes/SS220/Catalog/uplink_catalog.yml
@@ -253,6 +253,8 @@
   conditions:
     - !type:ListingLimitedStockCondition
       stock: 1
+    - !type:BuyBeforeCondition #block buy listing, if any other listing was bought
+      blacklistAll: true
     - !type:StoreWhitelistCondition
       blacklist:
         tags: