diff --git a/Data.SeaHavenIndustries/Migrations/20260624200000_Phase4_SearchIndexes.cs b/Data.SeaHavenIndustries/Migrations/20260624200000_Phase4_SearchIndexes.cs
index 427b6cf..51795a3 100644
--- a/Data.SeaHavenIndustries/Migrations/20260624200000_Phase4_SearchIndexes.cs
+++ b/Data.SeaHavenIndustries/Migrations/20260624200000_Phase4_SearchIndexes.cs
@@ -10,6 +10,27 @@ namespace Data.SeaHavenIndustries.Migrations
         /// <inheritdoc />
         protected override void Up(MigrationBuilder migrationBuilder)
         {
+            // nvarchar(max) cannot be an index key; shrink before indexing.
+            migrationBuilder.AlterColumn<string>(
+                name: "SiteCode",
+                table: "workOrders",
+                type: "nvarchar(450)",
+                maxLength: 450,
+                nullable: true,
+                oldClrType: typeof(string),
+                oldType: "nvarchar(max)",
+                oldNullable: true);
+
+            migrationBuilder.AlterColumn<string>(
+                name: "InternalWONumber",
+                table: "workOrders",
+                type: "nvarchar(450)",
+                maxLength: 450,
+                nullable: true,
+                oldClrType: typeof(string),
+                oldType: "nvarchar(max)",
+                oldNullable: true);
+
             migrationBuilder.CreateIndex(
                 name: "IX_workOrders_SiteCode",
                 table: "workOrders",
@@ -43,6 +64,26 @@ namespace Data.SeaHavenIndustries.Migrations
             migrationBuilder.DropIndex(
                 name: "IX_workOrders_LifecycleStatus_ScheduledDate",
                 table: "workOrders");
+
+            migrationBuilder.AlterColumn<string>(
+                name: "SiteCode",
+                table: "workOrders",
+                type: "nvarchar(max)",
+                nullable: true,
+                oldClrType: typeof(string),
+                oldType: "nvarchar(450)",
+                oldMaxLength: 450,
+                oldNullable: true);
+
+            migrationBuilder.AlterColumn<string>(
+                name: "InternalWONumber",
+                table: "workOrders",
+                type: "nvarchar(max)",
+                nullable: true,
+                oldClrType: typeof(string),
+                oldType: "nvarchar(450)",
+                oldMaxLength: 450,
+                oldNullable: true);
         }
     }
 }