From 09c9f4038d3adb24e4d027596b40d992ab41d138 Mon Sep 17 00:00:00 2001
From: rachit367 <rachit367@gmail.com>
Date: Sun, 17 May 2026 13:12:40 +0530
Subject: [PATCH] fix(db-mongodb): handle admin.condition in sparse unique
 indexes

---
 packages/db-mongodb/src/models/buildSchema.ts | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/packages/db-mongodb/src/models/buildSchema.ts b/packages/db-mongodb/src/models/buildSchema.ts
index 92c33d70ea8..63f789c3377 100644
--- a/packages/db-mongodb/src/models/buildSchema.ts
+++ b/packages/db-mongodb/src/models/buildSchema.ts
@@ -81,6 +81,8 @@ const formatBaseSchema = ({
     unique: (!disableUnique && field.unique) || false,
   }
 
+  const effectivelyOptional = field.required !== true || Boolean(field.admin?.condition)
+
   if (
     schema.unique &&
     (fieldShouldBeLocalized({ field, parentIsLocalized }) ||
@@ -88,7 +90,7 @@ const formatBaseSchema = ({
       (fieldAffectsData(field) &&
         field.type !== 'group' &&
         field.type !== 'tab' &&
-        field.required !== true))
+        effectivelyOptional))
   ) {
     schema.sparse = true
   }