diff --git a/backend/api/v1/modules/a76/general_catalogs/prevalidators/routes.py b/backend/api/v1/modules/a76/general_catalogs/prevalidators/routes.py
index 539a2d6e..605fdb09 100644
--- a/backend/api/v1/modules/a76/general_catalogs/prevalidators/routes.py
+++ b/backend/api/v1/modules/a76/general_catalogs/prevalidators/routes.py
@@ -29,6 +29,7 @@ prevalidator_crud = TenantCRUDRoutes(
     tags=["Prevalidators"],
     resource_name="Prevalidator",
     enable_list=True,
+    enable_filters=True,
     list_permissions=["cat_prevalidators.view"],
     get_permissions=["cat_prevalidators.view"],
     create_permissions=["cat_prevalidators.create"],
diff --git a/frontend/src/lib/api/dashboard/a76/general_catalogs/prevalidators.ts b/frontend/src/lib/api/dashboard/a76/general_catalogs/prevalidators.ts
index 7233839f..70bb0a4c 100644
--- a/frontend/src/lib/api/dashboard/a76/general_catalogs/prevalidators.ts
+++ b/frontend/src/lib/api/dashboard/a76/general_catalogs/prevalidators.ts
@@ -37,17 +37,17 @@ export async function getPrevalidators(
     filters: Record<string, any> = {},
     companyId?: number
 ): Promise<ApiResponse<PrevalidatorListResponse>> {
-    const params = new URLSearchParams({
+    const paramObj: Record<string, string> = {
         page: page.toString(),
-        page_size: pageSize.toString(),
-        ...filters
+        page_size: pageSize.toString()
+    };
+    if (companyId) paramObj.company_id = companyId.toString();
+    Object.entries(filters).forEach(([k, v]) => {
+        if (v !== undefined && v !== null && v !== '') paramObj[k] = String(v);
     });
-    if (companyId) {
-        params.append('company_id', companyId.toString());
-    }
+    const params = new URLSearchParams(paramObj);
 
-    const response = await api.get(`/v1/a76/prevalidators/?${params.toString()}`);
-    return response.data;
+    return api.get(`/v1/a76/prevalidators/?${params.toString()}`);
 }
 
 export async function getPrevalidator(id: number, companyId?: number): Promise<Prevalidator> {
diff --git a/frontend/src/lib/api/dashboard/a76/general_catalogs/signatures.ts b/frontend/src/lib/api/dashboard/a76/general_catalogs/signatures.ts
index 890dbed7..fe654100 100644
--- a/frontend/src/lib/api/dashboard/a76/general_catalogs/signatures.ts
+++ b/frontend/src/lib/api/dashboard/a76/general_catalogs/signatures.ts
@@ -3,12 +3,12 @@ import type { ApiResponse } from '$lib/api';
 
 export interface Signature {
     id: number;
-	
-    code: string;               
-    signature: string | null;   
-    photo_path: string | null; 
-    
-   
+
+    code: string;
+    signature: string | null;
+    photo_path: string | null;
+
+
     tenant_id: number;
     company_id: number;
     created_at: string;
@@ -19,10 +19,10 @@ export interface SignatureCreate {
     code: string;
     signature?: string | null;
     photo_path?: string | null;
-   
+
 }
 
-export interface SignatureUpdate extends Partial<SignatureCreate> {}
+export interface SignatureUpdate extends Partial<SignatureCreate> { }
 
 export interface SignatureListResponse {
     items: Signature[];
@@ -49,7 +49,6 @@ export async function getSignatures(
     });
     const params = new URLSearchParams(paramObj);
 
-
     return api.get(`/v1/a76/signatures/?${params.toString()}`);
 }
 
@@ -62,7 +61,7 @@ export async function getSignature(id: number, companyId: number): Promise<Signa
 
 
 export async function createSignature(
-    data: SignatureCreate, 
+    data: SignatureCreate,
     companyId: number
 ): Promise<Signature> {
     const response = await api.post(`/v1/a76/signatures/?company_id=${companyId}`, data);
@@ -71,8 +70,8 @@ export async function createSignature(
 }
 
 export async function updateSignature(
-    id: number, 
-    data: SignatureUpdate, 
+    id: number,
+    data: SignatureUpdate,
     companyId: number
 ): Promise<Signature> {
     const response = await api.put(`/v1/a76/signatures/${id}/?company_id=${companyId}`, data);
diff --git a/frontend/src/lib/components/dashboard/general_catalogs/prevalidators/create-edit-dialog.svelte b/frontend/src/lib/components/dashboard/general_catalogs/prevalidators/create-edit-dialog.svelte
index f1e217f6..490cfd5d 100644
--- a/frontend/src/lib/components/dashboard/general_catalogs/prevalidators/create-edit-dialog.svelte
+++ b/frontend/src/lib/components/dashboard/general_catalogs/prevalidators/create-edit-dialog.svelte
@@ -89,7 +89,7 @@
 </script>
 
 <Dialog.Root bind:open>
-	<Dialog.Content class="sm:max-w-[500px]">
+	<Dialog.Content class="sm:max-w-[500px]" onInteractOutside={(e) => e.preventDefault()}>
 		<Dialog.Header>
 			<Dialog.Title>{title}</Dialog.Title>
 		</Dialog.Header>
diff --git a/frontend/src/routes/dashboard/general_catalogs/prevalidators/+page.svelte b/frontend/src/routes/dashboard/general_catalogs/prevalidators/+page.svelte
index 71951916..b6f80bd7 100644
--- a/frontend/src/routes/dashboard/general_catalogs/prevalidators/+page.svelte
+++ b/frontend/src/routes/dashboard/general_catalogs/prevalidators/+page.svelte
@@ -7,7 +7,7 @@
 	import * as Card from '$lib/components/ui/card';
 	import { Button } from '$lib/components/ui/button';
 	import { Input } from '$lib/components/ui/input';
-	import { Pencil, Plus, Trash2 } from 'lucide-svelte';
+	import { Pencil, Plus, Trash2, RefreshCw } from 'lucide-svelte';
 	import InfiniteDataTable from '$lib/components/dashboard/common/infinite-data-table.svelte';
 	import { createColumns } from '$lib/components/dashboard/general_catalogs/prevalidators/columns';
 	import CreateEditDialog from '$lib/components/dashboard/general_catalogs/prevalidators/create-edit-dialog.svelte';
@@ -226,7 +226,9 @@
 					size="sm"
 					class="h-9"
 					onclick={reloadData}
+					disabled={loading}
 				>
+					<RefreshCw class="mr-2 h-4 w-4 {loading ? 'animate-spin' : ''}" />
 					Actualizar
 				</Button>
 				{#if canCreate}
@@ -262,7 +264,17 @@
 			</Card.Header>
 			<Card.Content class="p-0 flex-1 overflow-hidden min-h-0">
 				<div class="rounded-md border bg-background overflow-hidden h-full">
-					<InfiniteDataTable data={allItems} {columns} {loading} {hasMore} {loadMore} />
+					<InfiniteDataTable
+						data={allItems}
+						{columns}
+						{loading}
+						{hasMore}
+						{loadMore}
+						{selectedIds}
+						onSelectedIdsChange={(ids) => (selectedIds = ids)}
+						onRowClick={handleRowClick}
+						onRowDoubleClick={handleRowDoubleClick}
+					/>
 				</div>
 			</Card.Content>
 		</Card.Root>