SentiLink Match

SentiLink Match completes one missing identity field for an individual applicant. The Workflow Builder block exposes two services:

Service	Service ID	Required application data	Purpose
SentiLink SSN Completion	`sentilink_ssn_completion`	Owner first and last name, address line 1, city, state, and ZIP code	Attempts to complete the applicant’s Social Security number (SSN).
SentiLink DOB Completion	`sentilink_dob_completion`	Owner first and last name, address line 1, city, state, ZIP code, and SSN	Attempts to complete the applicant’s date of birth (DOB).

SentiLink Match is a bring-your-own-credentials service. Your organization must connect a SentiLink account and token before either completion service can run.

Requirements

Both services validate the current application data before calling SentiLink.

SSN Completion

Application field	Requirement	Notes
Owner first name	Required	Must be present.
Owner last name	Required	Must be present.
Owner address line 1	Required	Must be present.
Owner city	Required	Must be present.
Owner state	Required	Must be a valid state.
Owner ZIP code	Required	Must be five digits or ZIP+4 in `12345-6789` form.
Owner date of birth	Optional	Must use `YYYY-MM-DD` when present.

DOB Completion

Application field	Requirement	Notes
Owner first name	Required	Must be present.
Owner last name	Required	Must be present.
Owner address line 1	Required	Must be present.
Owner city	Required	Must be present.
Owner state	Required	Must be a valid state.
Owner ZIP code	Required	Must be five digits or ZIP+4 in `12345-6789` form.
Owner SSN	Required	Must pass SSN validation.

The previous combinations that omitted the street address or ZIP code are no longer valid. The current request validator requires the full name and address fields for both operations.

Run through the application enrichment API

Call PUT /api/applications/{application_id}/enrich through Enrich Business Credit Application.
Set provider to sentilink_ssn_completion or sentilink_dob_completion.
Do not send service-specific options; neither service requires options.
Include stage_id only when the application workflow requires a specific underwriting stage.
Confirm that the response contains data.onqueue: true.
Poll Get Commercial Data with the applicable services[] filter.

{
  "provider": "sentilink_ssn_completion",
  "stage_id": "00000000-0000-4000-8000-000000000000"
}

The request is asynchronous. data.onqueue: true confirms that Lendflow queued the job; it does not mean SentiLink returned a completed value.

Service	Result path	Status path	Stored request path
SSN Completion	`data.commercial_data.sentilink_ssn_completion`	`data.statuses.sentilink_ssn_completion`	`data.request_data.sentilink_ssn_completion`
DOB Completion	`data.commercial_data.sentilink_dob_completion`	`data.statuses.sentilink_dob_completion`	`data.request_data.sentilink_dob_completion`

The result or stored request can contain an SSN. Restrict access, avoid logging these objects, and mask sensitive values in your interface.

Data Orchestration availability and flow

The Sentilink Match block is available in Workflow Builder’s underwriting Match group for individual entities. It contains both completion services and has no provider-specific options.

Add Sentilink Match to an individual underwriting workflow.
Ensure the required application fields and SentiLink credentials are available before the block runs.
Connect the block in the required execution order, then save and publish the workflow.
Execute the published orchestration through Execute Data Orchestration with template_id, application_id, and stage_id when applicable.
Confirm that the response contains data.executed: true.
Monitor the asynchronous run with List Data Orchestration Logs.
Read each service’s status and result from the commercial-data paths above.

The block does not require another data-service block to run first. Its dependency is complete individual identity data: DOB Completion needs an SSN, while SSN Completion can use a DOB when one is available.

What the service returns

Response area	Meaning
`application`	SentiLink’s completed application data. It can include the newly completed `ssn` or `dob` plus identity and address values.
`updated_fields`	The fields SentiLink completed. An empty array means no field was returned for update.
`confidence_level`	SentiLink’s confidence in an SSN completion. This field can be absent, including in DOB Completion responses.
Execution metadata	Provider transaction, environment, timestamp, and latency values for the request.

Representative response

This abbreviated response is based on Lendflow’s current SentiLink completion fixtures. Identifiers and personal data are sanitized.

{
  "application": {
    "first_name": "JANE",
    "last_name": "EXAMPLE",
    "dob": "1985-04-12",
    "ssn": "***-**-6789",
    "address_line_1": "100 MAIN ST",
    "city": "AUSTIN",
    "state_code": "TX",
    "zip_code": "78701"
  },
  "environment": "PROD",
  "latency_ms": 137,
  "timestamp": "2026-08-15T14:37:51Z",
  "transaction_id": "txn_example_01",
  "updated_fields": ["ssn"],
  "confidence_level": "very_high"
}

Response attributes

Completed identity data

Attribute	Type	Meaning	Possible values or units	When returned
`application`	Object	Identity data returned by SentiLink.	Provider object.	On a provider response.
`application.first_name`	String	Applicant first name used for the match.	Text.	When echoed by SentiLink.
`application.last_name`	String	Applicant last name used for the match.	Text.	When echoed by SentiLink.
`application.dob`	String	Applicant DOB, including a completed DOB.	`YYYY-MM-DD`.	When supplied or completed.
`application.ssn`	String	Applicant SSN, including a completed SSN.	Sensitive identifier string.	When supplied or completed.
`application.address_line_1`	String	Applicant street address.	Text.	When echoed by SentiLink.
`application.city`	String	Applicant city.	Text.	When echoed by SentiLink.
`application.state_code`	String	Applicant state.	State code.	When echoed by SentiLink.
`application.zipcode` or `application.zip_code`	String	Applicant ZIP code.	Five digits or ZIP+4.	Provider fixtures contain both key spellings; integrations should tolerate either.
`updated_fields`	Array of strings	Fields completed by SentiLink.	`ssn`, `dob`, or an empty array.	On a completion response.
`confidence_level`	String or absent	Confidence in the completed SSN.	`very_high`, `high`, `medium`, `low`, or `very_low`.	Typically for SSN Completion when SentiLink returns confidence; it can be absent.

Execution metadata

Attribute	Type	Meaning	Possible values or units	When returned
`transaction_id`	String	SentiLink transaction identifier.	Provider identifier.	On a provider response.
`customer_id`	String or number or absent	SentiLink customer identifier.	Provider identifier.	When supplied by SentiLink.
`environment`	String	Provider environment.	Provider value such as `PROD`.	On a provider response.
`timestamp`	String	Time SentiLink processed the request.	Timestamp string.	On a provider response.
`latency_ms`	Number	Provider request latency.	Milliseconds.	On a provider response.
`notes`	String or absent	Provider notes.	Text.	When supplied by SentiLink.

Errors and statuses

Status or error	Meaning
`Not yet started`	Lendflow has no service log for this operation.
`Started`	The external-service job started and remains asynchronous.
`Success`	Lendflow stored a SentiLink response. Check `updated_fields`; success does not guarantee that a field was completed.
`Sentilink - Invalid data sent`	SentiLink rejected the provider request. Verify the required application fields and formats.
`Business owner ... is required` or validation message	A required name, address, SSN, state, ZIP, or date value is missing or invalid. Correct the application before retrying.
Service unavailable or credential error	The service is disabled, connected credentials are absent or invalid, or the provider cannot be reached.
Other message at the status path	Lendflow marked the job as failed and exposes the latest captured error message.

FAQ

Which SentiLink service should I run?

Run sentilink_ssn_completion when SSN is missing. Run sentilink_dob_completion when DOB is missing and a valid SSN is already stored.

Can I omit the address for SSN Completion?

No. The current validator requires address line 1, city, state, and ZIP code for both completion services.

Are SentiLink credentials required?

Yes. Both completion services support bring-your-own credentials only. Your organization must connect a SentiLink account and token.

Does data.onqueue true mean a value was completed?

No. It only confirms that the job was queued. Poll the commercial-data endpoint, wait for Success, and inspect updated_fields.

Why is confidence_level missing?

The field is optional. Lendflow’s current DOB Completion fixture omits it, and integrations must handle an absent value.

​SentiLink Match

​Requirements

​SSN Completion

​DOB Completion

​Run through the application enrichment API

​Data Orchestration availability and flow

​What the service returns

​Representative response

​Response attributes

​Completed identity data

​Execution metadata

​Errors and statuses

​FAQ

SentiLink Match

Requirements

SSN Completion

DOB Completion

Run through the application enrichment API

Data Orchestration availability and flow

What the service returns

Representative response

Response attributes

Completed identity data

Execution metadata

Errors and statuses

FAQ