---
title: "Add Credentials To SIPCredentials List"
slug: "add-credentials-to-sip"
updated: 2025-08-05T14:22:13Z
published: 2025-08-05T14:22:13Z
canonical: "documentation.decisions.com/add-credentials-to-sip"
---

> ## Documentation Index
> Fetch the complete documentation index at: https://documentation.decisions.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Add Credentials To SIPCredentials List

| Step Details |
| --- |
| **Introduced in Version** | 4.0.0 |
| **Last Modified in Version** | 7.12.0 |
| **Location** | Integration > Twilio > Admin |

The **Add Credentials To SIPCredentials List** step allows the user to add a specified user to a list of credentials.

### Prerequisites

- This step requires the [Telephony Module](https://documentation.decisions.com/docs/telephony) to be [installed](https://documentation.decisions.com/docs/installing-modules-decisions) before it will be available in the toolbox.
- **For v9 users:** Add a [Project Dependency](https://documentation.decisions.com/docs/project-dependencies) once the Telephony Module is installed.

---

## Properties

#### Inputs

| Property | Description | Data Type |
| --- | --- | --- |
| List To Add User To | The credential list to which the user will be added. | CredentialList |
| Password | The user's password. | String |
| User Name | The user's username. | String |

#### ![](https://cdn.document360.io/6ef8bcc1-6489-4486-9ad1-83acff7e5df0/Images/Documentation/image-1754403596261.png)

---

## Common Errors

### ListToAddUserToo must have a valid FriendlyName and SID

If the FriendlyName or SID field inputs are invalid, the step will cause an error.

To correct this, ensure that the FriendlyName and SID are valid. The FriendlyName and SID may also be loaded in from XML or JSON data.

![](https://cdn.document360.io/6ef8bcc1-6489-4486-9ad1-83acff7e5df0/Images/Documentation/image-1754403368973.png)

#### Exception Message:

```csharp
DecisionsFramework.Design.Flow.ErrorRunningFlowStep: Error running step Add Credentials To SIPCredentials List 1[AddCredentialsToSIPCredentialsList] in flow [Twilio]: Exception invoking method AddCredentialsToSIPCredentialsList on class TwilioAdminSteps
 ---> DecisionsFramework.LoggedException: Exception invoking method AddCredentialsToSIPCredentialsList on class TwilioAdminSteps
 ---> Twilio.Exceptions.ApiException: The requested resource /2010-04-01/Accounts/ACa0e6529b26b445ba0214f991b129bbbf/SIP/CredentialLists/CR1234567890abcdef1234567890abcdef.json was not found at Twilio.Clients.TwilioRestClient.ProcessResponse(Response response)
 at Twilio.Clients.TwilioRestClient.Request(Request request)
 at Twilio.Rest.Api.V2010.Account.Sip.CredentialListResource.Fetch(FetchCredentialListOptions options, ITwilioRestClient client)
 at Twilio.Rest.Api.V2010.Account.Sip.CredentialListResource.Fetch(String pathSid, String pathAccountSid, ITwilioRestClient client)
 at Decisions.Telephony.Service.Twilio.TwilioAdminSteps.AddCredentialsToSIPCredentialsList(CredentialList listToAddUserTo, String UserName, String Password)
 at System.RuntimeMethodHandle.InvokeMethod(Object target, Void** arguments, Signature sig, Boolean isConstructor)
 at System.Reflection.MethodBaseInvoker.InvokeDirectByRefWithFewArgs(Object obj, Span`1 copyOfArgs, BindingFlags invokeAttr)
   --- End of inner exception stack trace --- at DecisionsFramework.Design.Flow.StepImplementations.InvokeMethodStep.Run(StepStartData data)
 at DecisionsFramework.Design.Flow.FlowStep.RunStepInternal(String flowTrackingID, String stepTrackingID, KeyValuePairDataStructure[] stepRunDataValues, AbstractFlowTrackingData trackingData)
 at DecisionsFramework.Design.Flow.FlowStep.Start(String flowTrackingID, String stepTrackingID, FlowStateData data, AbstractFlowTrackingData trackingData, RunningStepData currentStepData)
   --- End of inner exception stack trace ---
```