diff --git a/index-scheduler/src/error.rs b/index-scheduler/src/error.rs
index 223b84762..3bd378fd6 100644
--- a/index-scheduler/src/error.rs
+++ b/index-scheduler/src/error.rs
@@ -101,7 +101,7 @@ pub enum Error {
     )]
     InvalidTaskCanceledBy { canceled_by: String },
     #[error(
-        "{index_uid} is not a valid index uid. Index uid can be an integer or a string containing only alphanumeric characters, hyphens (-) and underscores (_)."
+        "{index_uid} is not a valid index uid. Index uid can be an integer or a string containing only alphanumeric characters, hyphens (-) and underscores (_), and can not be more than 512 bytes."
     )]
     InvalidIndexUid { index_uid: String },
     #[error("Task `{0}` not found.")]
diff --git a/meilisearch-types/src/error.rs b/meilisearch-types/src/error.rs
index 0099cada5..c082f82f3 100644
--- a/meilisearch-types/src/error.rs
+++ b/meilisearch-types/src/error.rs
@@ -534,7 +534,7 @@ impl fmt::Display for deserr_codes::InvalidSimilarId {
             f,
             "the value of `id` is invalid. \
             A document identifier can be of type integer or string, \
-            only composed of alphanumeric characters (a-z A-Z 0-9), hyphens (-) and underscores (_)."
+            only composed of alphanumeric characters (a-z A-Z 0-9), hyphens (-) and underscores (_), and can not be more than 512 bytes."
         )
     }
 }
diff --git a/meilisearch-types/src/index_uid.rs b/meilisearch-types/src/index_uid.rs
index 341ab02cb..583aeef92 100644
--- a/meilisearch-types/src/index_uid.rs
+++ b/meilisearch-types/src/index_uid.rs
@@ -81,7 +81,7 @@ impl fmt::Display for IndexUidFormatError {
             f,
             "`{}` is not a valid index uid. Index uid can be an \
             integer or a string containing only alphanumeric \
-            characters, hyphens (-) and underscores (_).",
+            characters, hyphens (-) and underscores (_), and can not be more than 512 bytes.",
             self.invalid_uid,
         )
     }
diff --git a/meilisearch/src/routes/tasks.rs b/meilisearch/src/routes/tasks.rs
index 3dc6520af..02f009ff7 100644
--- a/meilisearch/src/routes/tasks.rs
+++ b/meilisearch/src/routes/tasks.rs
@@ -616,7 +616,7 @@ mod tests {
             let err = deserr_query_params::<TaskDeletionOrCancelationQuery>(params).unwrap_err();
             snapshot!(meili_snap::json_string!(err), @r###"
             {
-              "message": "Invalid value in parameter `indexUids[1]`: `hé` is not a valid index uid. Index uid can be an integer or a string containing only alphanumeric characters, hyphens (-) and underscores (_).",
+              "message": "Invalid value in parameter `indexUids[1]`: `hé` is not a valid index uid. Index uid can be an integer or a string containing only alphanumeric characters, hyphens (-) and underscores (_), and can not be more than 512 bytes.",
               "code": "invalid_index_uid",
               "type": "invalid_request",
               "link": "https://docs.meilisearch.com/errors#invalid_index_uid"
@@ -628,7 +628,7 @@ mod tests {
             let err = deserr_query_params::<TaskDeletionOrCancelationQuery>(params).unwrap_err();
             snapshot!(meili_snap::json_string!(err), @r###"
             {
-              "message": "Invalid value in parameter `indexUids`: `hé` is not a valid index uid. Index uid can be an integer or a string containing only alphanumeric characters, hyphens (-) and underscores (_).",
+              "message": "Invalid value in parameter `indexUids`: `hé` is not a valid index uid. Index uid can be an integer or a string containing only alphanumeric characters, hyphens (-) and underscores (_), and can not be more than 512 bytes.",
               "code": "invalid_index_uid",
               "type": "invalid_request",
               "link": "https://docs.meilisearch.com/errors#invalid_index_uid"
diff --git a/meilisearch/tests/documents/add_documents.rs b/meilisearch/tests/documents/add_documents.rs
index 819b2ddc2..c37b3a5e3 100644
--- a/meilisearch/tests/documents/add_documents.rs
+++ b/meilisearch/tests/documents/add_documents.rs
@@ -1023,7 +1023,7 @@ async fn error_document_add_create_index_bad_uid() {
     snapshot!(json_string!(response),
         @r###"
     {
-      "message": "`883  fj!` is not a valid index uid. Index uid can be an integer or a string containing only alphanumeric characters, hyphens (-) and underscores (_).",
+      "message": "`883  fj!` is not a valid index uid. Index uid can be an integer or a string containing only alphanumeric characters, hyphens (-) and underscores (_), and can not be more than 512 bytes.",
       "code": "invalid_index_uid",
       "type": "invalid_request",
       "link": "https://docs.meilisearch.com/errors#invalid_index_uid"
@@ -1280,7 +1280,7 @@ async fn error_add_documents_bad_document_id() {
         "indexedDocuments": 0
       },
       "error": {
-        "message": "Document identifier `\"foo & bar\"` is invalid. A document identifier can be of type integer or string, only composed of alphanumeric characters (a-z A-Z 0-9), hyphens (-) and underscores (_).",
+        "message": "Document identifier `\"foo & bar\"` is invalid. A document identifier can be of type integer or string, only composed of alphanumeric characters (a-z A-Z 0-9), hyphens (-) and underscores (_), and can not be more than 512 bytes.",
         "code": "invalid_document_id",
         "type": "invalid_request",
         "link": "https://docs.meilisearch.com/errors#invalid_document_id"
diff --git a/meilisearch/tests/documents/update_documents.rs b/meilisearch/tests/documents/update_documents.rs
index a5d466513..195dca914 100644
--- a/meilisearch/tests/documents/update_documents.rs
+++ b/meilisearch/tests/documents/update_documents.rs
@@ -11,7 +11,7 @@ async fn error_document_update_create_index_bad_uid() {
     let (response, code) = index.update_documents(json!([{"id": 1}]), None).await;
 
     let expected_response = json!({
-        "message": "`883  fj!` is not a valid index uid. Index uid can be an integer or a string containing only alphanumeric characters, hyphens (-) and underscores (_).",
+        "message": "`883  fj!` is not a valid index uid. Index uid can be an integer or a string containing only alphanumeric characters, hyphens (-) and underscores (_), and can not be more than 512 bytes.",
         "code": "invalid_index_uid",
         "type": "invalid_request",
         "link": "https://docs.meilisearch.com/errors#invalid_index_uid"
@@ -173,7 +173,7 @@ async fn error_update_documents_bad_document_id() {
     assert_eq!(
         response["error"]["message"],
         json!(
-            r#"Document identifier `"foo & bar"` is invalid. A document identifier can be of type integer or string, only composed of alphanumeric characters (a-z A-Z 0-9), hyphens (-) and underscores (_)."#
+            r#"Document identifier `"foo & bar"` is invalid. A document identifier can be of type integer or string, only composed of alphanumeric characters (a-z A-Z 0-9), hyphens (-) and underscores (_), and can not be more than 512 bytes."#
         )
     );
     assert_eq!(response["error"]["code"], json!("invalid_document_id"));
diff --git a/meilisearch/tests/index/create_index.rs b/meilisearch/tests/index/create_index.rs
index b51ccab51..8e3ff4760 100644
--- a/meilisearch/tests/index/create_index.rs
+++ b/meilisearch/tests/index/create_index.rs
@@ -192,7 +192,7 @@ async fn error_create_with_invalid_index_uid() {
     snapshot!(code, @"400 Bad Request");
     snapshot!(json_string!(response), @r###"
     {
-      "message": "Invalid value at `.uid`: `test test#!` is not a valid index uid. Index uid can be an integer or a string containing only alphanumeric characters, hyphens (-) and underscores (_).",
+      "message": "Invalid value at `.uid`: `test test#!` is not a valid index uid. Index uid can be an integer or a string containing only alphanumeric characters, hyphens (-) and underscores (_), and can not be more than 512 bytes.",
       "code": "invalid_index_uid",
       "type": "invalid_request",
       "link": "https://docs.meilisearch.com/errors#invalid_index_uid"
diff --git a/meilisearch/tests/index/errors.rs b/meilisearch/tests/index/errors.rs
index 9c677ee12..3bab83955 100644
--- a/meilisearch/tests/index/errors.rs
+++ b/meilisearch/tests/index/errors.rs
@@ -75,7 +75,7 @@ async fn create_index_bad_uid() {
     snapshot!(code, @"400 Bad Request");
     snapshot!(json_string!(response), @r###"
     {
-      "message": "Invalid value at `.uid`: `the best doggo` is not a valid index uid. Index uid can be an integer or a string containing only alphanumeric characters, hyphens (-) and underscores (_).",
+      "message": "Invalid value at `.uid`: `the best doggo` is not a valid index uid. Index uid can be an integer or a string containing only alphanumeric characters, hyphens (-) and underscores (_), and can not be more than 512 bytes.",
       "code": "invalid_index_uid",
       "type": "invalid_request",
       "link": "https://docs.meilisearch.com/errors#invalid_index_uid"
@@ -136,7 +136,7 @@ async fn get_index_bad_uid() {
     snapshot!(code, @"400 Bad Request");
     snapshot!(json_string!(response), @r###"
     {
-      "message": "`the good doggo` is not a valid index uid. Index uid can be an integer or a string containing only alphanumeric characters, hyphens (-) and underscores (_).",
+      "message": "`the good doggo` is not a valid index uid. Index uid can be an integer or a string containing only alphanumeric characters, hyphens (-) and underscores (_), and can not be more than 512 bytes.",
       "code": "invalid_index_uid",
       "type": "invalid_request",
       "link": "https://docs.meilisearch.com/errors#invalid_index_uid"
@@ -232,7 +232,7 @@ async fn update_index_bad_uid() {
     snapshot!(code, @"400 Bad Request");
     snapshot!(json_string!(response), @r###"
     {
-      "message": "`the good doggo` is not a valid index uid. Index uid can be an integer or a string containing only alphanumeric characters, hyphens (-) and underscores (_).",
+      "message": "`the good doggo` is not a valid index uid. Index uid can be an integer or a string containing only alphanumeric characters, hyphens (-) and underscores (_), and can not be more than 512 bytes.",
       "code": "invalid_index_uid",
       "type": "invalid_request",
       "link": "https://docs.meilisearch.com/errors#invalid_index_uid"
@@ -247,7 +247,7 @@ async fn delete_index_bad_uid() {
     snapshot!(code, @"400 Bad Request");
     snapshot!(json_string!(response), @r###"
     {
-      "message": "`the good doggo` is not a valid index uid. Index uid can be an integer or a string containing only alphanumeric characters, hyphens (-) and underscores (_).",
+      "message": "`the good doggo` is not a valid index uid. Index uid can be an integer or a string containing only alphanumeric characters, hyphens (-) and underscores (_), and can not be more than 512 bytes.",
       "code": "invalid_index_uid",
       "type": "invalid_request",
       "link": "https://docs.meilisearch.com/errors#invalid_index_uid"
diff --git a/meilisearch/tests/index/get_index.rs b/meilisearch/tests/index/get_index.rs
index 5a184c8ce..ce08251be 100644
--- a/meilisearch/tests/index/get_index.rs
+++ b/meilisearch/tests/index/get_index.rs
@@ -186,7 +186,7 @@ async fn get_invalid_index_uid() {
     snapshot!(code, @"400 Bad Request");
     snapshot!(json_string!(response), @r###"
     {
-      "message": "`this is not a valid index name` is not a valid index uid. Index uid can be an integer or a string containing only alphanumeric characters, hyphens (-) and underscores (_).",
+      "message": "`this is not a valid index name` is not a valid index uid. Index uid can be an integer or a string containing only alphanumeric characters, hyphens (-) and underscores (_), and can not be more than 512 bytes.",
       "code": "invalid_index_uid",
       "type": "invalid_request",
       "link": "https://docs.meilisearch.com/errors#invalid_index_uid"
diff --git a/meilisearch/tests/search/multi.rs b/meilisearch/tests/search/multi.rs
index 08ad0b18c..4bebb71fe 100644
--- a/meilisearch/tests/search/multi.rs
+++ b/meilisearch/tests/search/multi.rs
@@ -412,7 +412,7 @@ async fn simple_search_illegal_index_uid() {
     snapshot!(code, @"400 Bad Request");
     insta::assert_json_snapshot!(response, @r###"
     {
-      "message": "Invalid value at `.queries[0].indexUid`: `hé` is not a valid index uid. Index uid can be an integer or a string containing only alphanumeric characters, hyphens (-) and underscores (_).",
+      "message": "Invalid value at `.queries[0].indexUid`: `hé` is not a valid index uid. Index uid can be an integer or a string containing only alphanumeric characters, hyphens (-) and underscores (_), and can not be more than 512 bytes.",
       "code": "invalid_index_uid",
       "type": "invalid_request",
       "link": "https://docs.meilisearch.com/errors#invalid_index_uid"
@@ -437,7 +437,7 @@ async fn federation_search_illegal_index_uid() {
     snapshot!(code, @"400 Bad Request");
     insta::assert_json_snapshot!(response, @r###"
     {
-      "message": "Invalid value at `.queries[0].indexUid`: `hé` is not a valid index uid. Index uid can be an integer or a string containing only alphanumeric characters, hyphens (-) and underscores (_).",
+      "message": "Invalid value at `.queries[0].indexUid`: `hé` is not a valid index uid. Index uid can be an integer or a string containing only alphanumeric characters, hyphens (-) and underscores (_), and can not be more than 512 bytes.",
       "code": "invalid_index_uid",
       "type": "invalid_request",
       "link": "https://docs.meilisearch.com/errors#invalid_index_uid"
diff --git a/meilisearch/tests/settings/get_settings.rs b/meilisearch/tests/settings/get_settings.rs
index e99a9fa65..6de0db0b3 100644
--- a/meilisearch/tests/settings/get_settings.rs
+++ b/meilisearch/tests/settings/get_settings.rs
@@ -330,7 +330,7 @@ async fn error_update_setting_unexisting_index_invalid_uid() {
     meili_snap::snapshot!(code, @"400 Bad Request");
     meili_snap::snapshot!(meili_snap::json_string!(response), @r###"
     {
-      "message": "`test##!  ` is not a valid index uid. Index uid can be an integer or a string containing only alphanumeric characters, hyphens (-) and underscores (_).",
+      "message": "`test##!  ` is not a valid index uid. Index uid can be an integer or a string containing only alphanumeric characters, hyphens (-) and underscores (_), and can not be more than 512 bytes.",
       "code": "invalid_index_uid",
       "type": "invalid_request",
       "link": "https://docs.meilisearch.com/errors#invalid_index_uid"
diff --git a/meilisearch/tests/similar/errors.rs b/meilisearch/tests/similar/errors.rs
index d0be6562f..d42045d95 100644
--- a/meilisearch/tests/similar/errors.rs
+++ b/meilisearch/tests/similar/errors.rs
@@ -79,7 +79,7 @@ async fn similar_bad_id() {
     snapshot!(code, @"400 Bad Request");
     snapshot!(json_string!(response), @r###"
     {
-      "message": "Invalid value at `.id`: the value of `id` is invalid. A document identifier can be of type integer or string, only composed of alphanumeric characters (a-z A-Z 0-9), hyphens (-) and underscores (_).",
+      "message": "Invalid value at `.id`: the value of `id` is invalid. A document identifier can be of type integer or string, only composed of alphanumeric characters (a-z A-Z 0-9), hyphens (-) and underscores (_), and can not be more than 512 bytes.",
       "code": "invalid_similar_id",
       "type": "invalid_request",
       "link": "https://docs.meilisearch.com/errors#invalid_similar_id"
@@ -172,7 +172,7 @@ async fn similar_invalid_id() {
     snapshot!(code, @"400 Bad Request");
     snapshot!(json_string!(response), @r###"
     {
-      "message": "Invalid value at `.id`: the value of `id` is invalid. A document identifier can be of type integer or string, only composed of alphanumeric characters (a-z A-Z 0-9), hyphens (-) and underscores (_).",
+      "message": "Invalid value at `.id`: the value of `id` is invalid. A document identifier can be of type integer or string, only composed of alphanumeric characters (a-z A-Z 0-9), hyphens (-) and underscores (_), and can not be more than 512 bytes.",
       "code": "invalid_similar_id",
       "type": "invalid_request",
       "link": "https://docs.meilisearch.com/errors#invalid_similar_id"
diff --git a/meilisearch/tests/tasks/errors.rs b/meilisearch/tests/tasks/errors.rs
index c404a2329..42ec42997 100644
--- a/meilisearch/tests/tasks/errors.rs
+++ b/meilisearch/tests/tasks/errors.rs
@@ -173,7 +173,7 @@ async fn task_bad_index_uids() {
     snapshot!(code, @"400 Bad Request");
     snapshot!(json_string!(response), @r###"
     {
-      "message": "Invalid value in parameter `indexUids`: `the good doggo` is not a valid index uid. Index uid can be an integer or a string containing only alphanumeric characters, hyphens (-) and underscores (_).",
+      "message": "Invalid value in parameter `indexUids`: `the good doggo` is not a valid index uid. Index uid can be an integer or a string containing only alphanumeric characters, hyphens (-) and underscores (_), and can not be more than 512 bytes.",
       "code": "invalid_index_uid",
       "type": "invalid_request",
       "link": "https://docs.meilisearch.com/errors#invalid_index_uid"
@@ -184,7 +184,7 @@ async fn task_bad_index_uids() {
     snapshot!(code, @"400 Bad Request");
     snapshot!(json_string!(response), @r###"
     {
-      "message": "Invalid value in parameter `indexUids`: `the good doggo` is not a valid index uid. Index uid can be an integer or a string containing only alphanumeric characters, hyphens (-) and underscores (_).",
+      "message": "Invalid value in parameter `indexUids`: `the good doggo` is not a valid index uid. Index uid can be an integer or a string containing only alphanumeric characters, hyphens (-) and underscores (_), and can not be more than 512 bytes.",
       "code": "invalid_index_uid",
       "type": "invalid_request",
       "link": "https://docs.meilisearch.com/errors#invalid_index_uid"
@@ -195,7 +195,7 @@ async fn task_bad_index_uids() {
     snapshot!(code, @"400 Bad Request");
     snapshot!(json_string!(response), @r###"
     {
-      "message": "Invalid value in parameter `indexUids`: `the good doggo` is not a valid index uid. Index uid can be an integer or a string containing only alphanumeric characters, hyphens (-) and underscores (_).",
+      "message": "Invalid value in parameter `indexUids`: `the good doggo` is not a valid index uid. Index uid can be an integer or a string containing only alphanumeric characters, hyphens (-) and underscores (_), and can not be more than 512 bytes.",
       "code": "invalid_index_uid",
       "type": "invalid_request",
       "link": "https://docs.meilisearch.com/errors#invalid_index_uid"