diff --git a/stellar_rust_sdk/src/transactions/transactions_for_account_request.rs b/stellar_rust_sdk/src/transactions/transactions_for_account_request.rs
index 5c5ba08..523ad4a 100644
--- a/stellar_rust_sdk/src/transactions/transactions_for_account_request.rs
+++ b/stellar_rust_sdk/src/transactions/transactions_for_account_request.rs
@@ -1,4 +1,4 @@
-use crate::models::*;
+use crate::{models::*, BuildQueryParametersExt};
 use stellar_rust_sdk_derive::Pagination;
 use crate::Paginatable;
 
@@ -14,6 +14,8 @@ pub struct NoTransactionsAccountId;
 pub struct TransactionsForAccountRequest<I> {
     /// The ID of the account for which the transactions are to be retrieved.
     account_id: I,
+    // Indicates whether or not to include failed operations in the response.
+    include_failed: Option<bool>,
     /// A pointer to a specific location in a collection of responses, derived from the
     /// `paging_token` value of a record. Used for pagination control in the API response.
     pub cursor: Option<u32>,
@@ -43,12 +45,24 @@ impl TransactionsForAccountRequest<NoTransactionsAccountId> {
         self,
         account_id: String,
     ) -> Result<TransactionsForAccountRequest<TransactionsAccountId>, String> {
-        if let Err(e) = is_public_key(&account_id) {
-            return Err(e.to_string());
-        }
-
         Ok(TransactionsForAccountRequest {
             account_id: TransactionsAccountId(account_id),
+            include_failed: self.include_failed,
+            cursor: self.cursor,
+            limit: self.limit,
+            order: self.order,
+        })
+    }
+}
+
+impl TransactionsForAccountRequest<TransactionsAccountId> {
+    pub fn set_include_failed(
+        self,
+        include_failed: bool,
+    ) -> Result<TransactionsForAccountRequest<TransactionsAccountId>, String> {
+        Ok(TransactionsForAccountRequest {
+            account_id: self.account_id,
+            include_failed: Some(include_failed),
             cursor: self.cursor,
             limit: self.limit,
             order: self.order,
@@ -58,23 +72,28 @@ impl TransactionsForAccountRequest<NoTransactionsAccountId> {
 
 impl Request for TransactionsForAccountRequest<TransactionsAccountId> {
     fn get_query_parameters(&self) -> String {
-        let mut query = String::new();
-        query.push_str(&format!("{}", self.account_id.0));
-
-        query.trim_end_matches('&').to_string()
+        vec![
+            self.cursor.as_ref().map(|c| format!("cursor={}", c)),
+            self.limit.as_ref().map(|l| format!("limit={}", l)),
+            self.order.as_ref().map(|o| format!("order={}", o)),
+            self.include_failed
+                .as_ref()
+                .map(|i| format!("include_failed={}", i)),
+        ]
+        .build_query_parameters()
     }
 
     fn build_url(&self, base_url: &str) -> String {
-        // This URL is not built with query paramaters, but with the account ID as addition to the path.
-        // Therefore there is no `?` but a `/` in the formatted string.
-        // Additionally, this request uses the API endpoint for `accounts`.
+        // TODO: Documentation
+        let account_id = &self.account_id.0;
         use crate::accounts::ACCOUNTS_PATH;
         format!(
-            "{}/{}/{}/{}",
+            "{}/{}/{}/{}{}",
             base_url,
             ACCOUNTS_PATH,
+            account_id,
+            super::TRANSACTIONS_PATH,
             self.get_query_parameters(),
-            super::TRANSACTIONS_PATH
         )
     }
 }
\ No newline at end of file