Modify ACH Account

Use the Modify ACH Account endpoint to change an existing ACH account's information. You can add the same ACH account to multiple customer accounts, but you cannot add the same ACH account to the same customer account multiple times.

For instructions on using this endpoint see Modifying ACH Accounts in the ACH Endpoints guide.

Status codes

See Global Response Statuses for status codes that are common across endpoints.

The table below lists status codes that apply to this specific endpoint.

Status codeDescription
424-01ACH account not found
424-02ACH account already exists
Form Data
string
required

Web service username, as provided by Galileo.
Pattern: Max 50 characters
Example: "AbC123-9999"

string
required

Web service password, as provided by Galileo.
Pattern: Max 15 characters
Example: "4sb62fh6w4h7w34g"

int32
required

Galileo-issued provider identifier.
Pattern: Max 10 digits
Example: 9999

string
required
1 to 60

A unique provider-generated ID to identify this API call. A UUID is preferred.
Pattern: 60 characters or less
Example: "9845dk-39fdk3fj3-4483483478"

string
required

The PRN or PAN of the account.
Pattern: PAN or PRN
Example: "074103447228"

int32
required

ACH account identifier (ach_account_id), as returned by Add ACH Account or Get ACH Accounts endpoint.
Pattern: Integer
Example: 354656

string | null

The display name of the ACH account.
Pattern: Alphanumeric string, max 22 characters
Example: "Checking account"

string | null
enum

Type of the external bank account:

  • C — Checking
  • S — Savings
  • M — Money market

Pattern: String
Example: "C"

Allowed:
string | null

External bank account number.
Pattern: Max 22 digits
Example: "4483434234348"

string | null

Routing number for the external bank where achAccountNo is housed.
Pattern: 9-digit routing number, including check digit
Example: "124001545"

string | null
enum

Specifies the type of ACH account to modify: individual (I) or company (C). C is valid only when BTBPG is set at the program level and when the ACH account was created using the Add ACH Account Corporate endpoint. When this value is I then firstName and lastName are required. When this value is C then companyName is required.
Pattern: String
Example: "C"

Allowed:
string | null

Required when entityType: I. First name(s) of the external account holder. Only the first 9 characters of this field are present in the outgoing Nacha file.
Pattern: 1–40 alphanumeric characters
Example: "Maricela Elena"

string | null

Required when entityType: I. Last name(s) of the external account holder. Only the first 12 characters of this field are present in the outgoing Nacha file.
Pattern: 1–40 alphanumeric characters
Example: "Garcia Castro"

string | null

Required when entityType: C. Name of the company that holds the external account. Keep in mind that only the first 22 characters of this name will be present in the outgoing Nacha file.
Pattern: 1–40 alphanumeric characters
Example: "Mountain Star Utilities"

string | null
≤ 20

Unique location identifier (location) as returned by the Create Location endpoint. This value is also returned by the Get Locations endpoint depending on the value of locationType when the location was created:

  • 0 or 2 — Returned in the location_id field
  • 1 — Returned in the provider_specified_id field

Pattern: Integer if locationType: 0 or locationType: 2; max 15 characters if locationType: 1
Example: "a455-3483"

int32 | null
enum

Type of ID in location:

  • 0 — Galileo location ID
  • 1 — Partner location ID
  • 2 — Don't validate

Pattern: Integer
Example: 1

Allowed:
Headers
string
enum
Defaults to json

Use this header instead of the standard accept header to specify the response format.

Allowed:
string
enum
Defaults to application/json

Generated from available response content types

Allowed:
Response

Language
URL
LoadingLoading…
Response
Click Try It! to start a request and see the response here! Or choose an example:
application/json
application/xml

© Galileo Financial Technologies, LLC 2026    Privacy Disclosure

All documentation, including but not limited to text, graphics, images, and any other content, are the exclusive property of Galileo Financial Technologies, LLC and are protected by copyright laws. These materials may not be reproduced, distributed, transmitted, displayed, or otherwise used without the prior written permission of Galileo Financial Technologies, LLC. Any unauthorized use or reproduction of these materials are expressly prohibited.