How do you go about editing UpsRestClient.cs class?

​@kkraus This is AI generated answer hope it’ helpful

Locate the File

Usually, the file is part of the Acumatica customization source or a custom integration project.
Common locations:

App_Data\Projects\<YourCustomization>\Code\UPS\

or

PX.Objects\SO\CarrierService\UPS\

or sometimes inside:

External Plug-ins / Custom Connector / Shipping Plugin project

If you’re using Visual Studio, search your project for the file name:

• Press Ctrl + Shift + F

• Type UpsRestClient.cs

• It will show the exact path.

2. Open in Visual Studio

• Open your Customization Project (if you’re working inside Acumatica, open through the Customization Project Editor → Code → View Source).

• Locate UpsRestClient.cs.

• Right-click → Open.

3. Make Your Edits

Inside the class, you can usually modify:

• API endpoint URLs

• Authentication logic (UPS Access Key, Username, Password)

• Request payloads

• Logging or error-handling sections

Example (simplified):

public class UpsRestClient { private readonly string _baseUrl = "https://onlinetools.ups.com"; private readonly string _accessKey; private readonly string _username; private readonly string _password; public UpsRestClient(string accessKey, string username, string password) { _accessKey = accessKey; _username = username; _password = password; } public string GetRates(string requestBody) { // modify this section if you want to log or change request headers var client = new HttpClient(); client.DefaultRequestHeaders.Add("AccessLicenseNumber", _accessKey); client.DefaultRequestHeaders.Add("Username", _username); client.DefaultRequestHeaders.Add("Password", _password); var response = client.PostAsync($"{_baseUrl}/ship/rate", new StringContent(requestBody)).Result; return response.Content.ReadAsStringAsync().Result; } }

4. Save and Rebuild

After editing:

• Save your file.

• Rebuild the project.

• If inside Acumatica Customization Project → click Publish to Site.

5. Test Your Changes

Go to the Shipments or Carrier Configuration screen and verify that UPS functions (Rate, Validate, or Ship) behave correctly.

​@smuddurthi81 - I suggest that you stop posting AI-generated answers unless you have enough expertise in that area of Acumatica to know when the answer is a hallucination and when it’s not.

​@kkraus Where are you seeing this class? I searched the source code and couldn’t locate it.

I’m trying to follow the instructions in this post: 

to edit UPS and Fedex’s files.

AFAIK, you can’t edit/extend those classes. We’ve had to make changes to them, but we’ve done that by decompiling the code, creating a new carrier, and implementing our changes in that.