diff --git a/R/impl_account_sub_account.R b/R/impl_account_sub_account.R
index ccdcec5c..93e96f95 100644
--- a/R/impl_account_sub_account.R
+++ b/R/impl_account_sub_account.R
@@ -58,17 +58,10 @@ box::use(
 #' @param remarks Character string (optional); remarks or notes about the sub-account (1–24 characters if provided).
 #'
 #' @return Promise resolving to a `data.table` containing sub-account details, including:
-#'   - `userId` (character): Unique identifier of the master account.
-#'   - `uid` (integer): Unique identifier for the sub-account.
+#'   - `uid` (numeric): Unique identifier for the sub-account.
 #'   - `subName` (character): Name of the sub-account.
-#'   - `status` (integer): Current status of the sub-account.
-#'   - `type` (integer): Type of sub-account.
+#'   - `remarks` (character): Remarks or notes associated with the sub-account.
 #'   - `access` (character): Permission type granted to the sub-account.
-#'   - `createdAt` (integer): Timestamp of creation in milliseconds.
-#'   - `remarks` (character): Any provided remarks or notes.
-#'   - `tradeTypes` (list): Array of available trade types for the sub-account.
-#'   - `openedTradeTypes` (list): Array of currently open trade types.
-#'   - `hostedStatus` (character or NULL): Hosted status of the sub-account.
 #'
 #' ## Details
 #'
@@ -92,6 +85,10 @@ box::use(
 #' ### Response Schema
 #' - `code` (string): Status code, where `"200000"` indicates success.
 #' - `data` (object): Contains pagination metadata and an `items` array with the sub-account details.
+#'   - `uid` (integer): Unique identifier for the sub-account.
+#'   - `subName` (string): Name of the sub-account.
+#'   - `remarks` (string): Remarks or notes associated with the sub-account.
+#'   - `access` (string): Permission type granted to the sub-account.
 #'
 #' **Example JSON Response**:
 #' ```json
@@ -169,9 +166,8 @@ add_subaccount_impl <- coro::async(function(
     access = c("Spot", "Futures", "Margin"),
     remarks = NULL
 ) {
-    access <- rlang::arg_match(access)
+    access <- rlang::arg_match0(access, values = c("Spot", "Futures", "Margin"))
     tryCatch({
-
         endpoint <- "/api/v2/sub/user/created"
         method <- "POST"
         body_list <- list(
@@ -186,9 +182,9 @@ add_subaccount_impl <- coro::async(function(
         headers <- await(build_headers(method, endpoint, body, keys))
         url <- paste0(base_url, endpoint)
         response <- httr::POST(url, headers, body = body, encode = "raw", httr::timeout(3))
-        saveRDS(response, "./api-responses/impl_account_sub_account/response-add_subaccount_impl.ignore.Rds")
+        # saveRDS(response, "../../api-responses/impl_account_sub_account/response-add_subaccount_impl.ignore.Rds")
         parsed_response <- process_kucoin_response(response, url)
-        saveRDS(parsed_response, "./api-responses/impl_account_sub_account/parsed_response-add_subaccount_impl.Rds")
+        # saveRDS(parsed_response, "../../api-responses/impl_account_sub_account/parsed_response-add_subaccount_impl.Rds")
         return(data.table::as.data.table(parsed_response$data))
     }, error = function(e) {
         rlang::abort(paste("Error in add_subaccount_impl:", conditionMessage(e)))
diff --git a/scripts/tests-manual/run-single_test.R b/scripts/tests-manual/run-single_test.R
index 3b6613d4..92458a41 100644
--- a/scripts/tests-manual/run-single_test.R
+++ b/scripts/tests-manual/run-single_test.R
@@ -16,6 +16,12 @@ box::use(
         get_deposit_addresses_v3_impl,
         get_deposit_history_impl
     ],
+    ../../R/impl_account_sub_account[
+        add_subaccount_impl,
+        get_subaccount_list_summary_impl,
+        get_subaccount_detail_balance_impl,
+        get_subaccount_spot_v2_impl
+    ],
     ../../R/utils[get_api_keys, get_base_url],
     ../../R/utils_time_convert_kucoin[time_convert_from_kucoin, time_convert_to_kucoin],
     coro[async, await],
@@ -28,19 +34,16 @@ main_async <- async(function() {
     keys <- get_api_keys()
     base_url <- get_base_url()
 
-    # Example 1: Using lubridate datetime objects directly
-    cat("\n--- Example 1: Using datetime objects ---\n")
-    history1 <- await(get_deposit_history_impl(
+    # 1. Add a subaccount
+    subaccount <- await(add_subaccount_impl(
         keys = keys,
         base_url = base_url,
-        currency = "BTC",
-        status = "SUCCESS",
-        startAt = lubridate::now() - lubridate::years(3),
-        endAt = lubridate::now(),
-        page_size = 50
+        password = "some69superComplexS3cr3tP@ssw0rd",
+        subName = "rtradebot6971469",
+        access = "Spot",
+        remarks = "Some super genius remark"
     ))
-    cat("\nDeposit History for BTC (using datetime objects):\n")
-    print(history1)
+    print(subaccount)
 })
 
 # Run the main async function