diff --git a/src/types/error.ts b/src/types/error.ts
index e3db961..6680f15 100644
--- a/src/types/error.ts
+++ b/src/types/error.ts
@@ -9,8 +9,6 @@ export type ErrorFieldValueInArray =
 	`Error: Field Value is not a valid data type in array, directly or indirectly`
 export type ErrorUnassignedAbleFieldValue =
 	`Error: Please do not directly assign Increment, Array Remove and Array Union Field Value`
-export type ErrorUnionInvolveObjectType =
-	`Error: Please check your type declaration, do not union object literal type with other type except PossiblyReadAsUndefined and Delete`
 export type ErrorDeleteFieldMerge =
 	`Error: To use deleteField, please set 'merge' to 'true' or set 'mergeFields with an array, empty array also fine' in the options parameter.`
 export type ErrorDeleteFieldUnion<T extends string> =
@@ -105,7 +103,6 @@ export type ErrorMsgs =
 	| ErrorFieldValueInArray
 	| ErrorEmptyDocumentOrCollectionID<'Document' | 'Collection'>
 	| ErrorUnassignedAbleFieldValue
-	| ErrorUnionInvolveObjectType
 	| ErrorDeleteFieldMerge
 	| ErrorDeleteFieldUnion<string>
 	| ErrorNumberOfForwardSlashIsNotEqual<string, string>
diff --git a/src/types/noObjectUnion.ts b/src/types/noObjectUnion.ts
deleted file mode 100644
index 602161c..0000000
--- a/src/types/noObjectUnion.ts
+++ /dev/null
@@ -1,19 +0,0 @@
-import { IsUnion } from './utils'
-import { ErrorUnionInvolveObjectType } from './error'
-import { FieldValues, PossiblyReadAsUndefined, Delete } from './fieldValues'
-
-type ExtractObject<T> = Extract<T, Record<string, unknown>>
-
-export type NoObjectUnion<T> = IsUnion<
-	Exclude<T, PossiblyReadAsUndefined | Delete>
-> extends true
-	? ExtractObject<Exclude<T, PossiblyReadAsUndefined | Delete>> extends never
-		? T
-		: ErrorUnionInvolveObjectType
-	: T extends FieldValues
-	? T
-	: T extends Record<string, unknown>
-	? {
-			[K in keyof T]: NoObjectUnion<T[K]>
-	  }
-	: T