ml-connector
Infor CloudSuiteGusto

Infor CloudSuite and Gusto integration

Infor CloudSuite runs your finance, procurement, and supply chain. Gusto runs payroll and HR. Connecting the two keeps your headcount aligned with GL cost centers and enables payroll journals to post automatically into CloudSuite at each pay run. New hires, terminations, and job changes in Gusto propagate to CloudSuite so GL allocations land on valid departments and cost centers. ml-connector handles the different APIs and credential models on each side and orchestrates the sync on a schedule you control.

How Infor CloudSuite works

Infor CloudSuite (M3, SyteLine, FSM, Distribution, LN) exposes suppliers, purchase orders, invoices, GL accounts, customers, items, and goods receipts through the ION API Gateway using REST APIs and OData. Authentication uses OAuth 2.0 Resource Owner Password Credentials with service account credentials and registered app client ID/secret, with token lifetimes configurable from 1 to 24 hours per tenant. CloudSuite publishes no traditional webhooks; push is available via ION Desk document flows (Sync.SupplierInvoice, Sync.ChartOfAccounts) but requires admin configuration. Polling via REST is the standard approach for cloud connectors.

How Gusto works

Gusto exposes employees, jobs, compensations, payrolls, contractors, benefits, and tax filings through a REST API. Authentication uses OAuth 2.0 Authorization Code flow with tokens scoped to a single company; access tokens expire in 2 hours and refresh tokens never expire but rotate on refresh. Gusto supports webhooks for payroll (created, updated, processed, paid), company, employee, contractor, and bank account events, with the webhook endpoint required to return 2xx within 10 seconds and support HMAC-SHA256 signature verification. Gusto enforces a rate limit of 200 requests per minute per OAuth grant and uses object versioning for idempotency rather than idempotency keys.

What moves between them

Employee records flow from Gusto into Infor CloudSuite. After each payroll run, Gusto payroll data and employee status (active, terminated, rehired) sync to CloudSuite so GL cost center allocations reflect the current workforce. Job codes and compensation levels in Gusto map to CloudSuite GL dimensions and cost centers, ensuring payroll posting lands on valid GL accounts. CloudSuite is the system of record for GL accounts and cost centers; Gusto is read as the authoritative payroll and employee data source.

How ml-connector handles it

ml-connector stores Gusto OAuth tokens (access and refresh) encrypted and uses Gusto webhooks for real-time payroll event notification when enabled, with fallback polling on a payroll schedule. For Infor CloudSuite, it obtains OAuth tokens via the ION API Gateway using the tenant-specific credentials and base URL provided per customer, and polls the M3 or SyteLine APIs for GL accounts and cost center data on a regular schedule. Job codes from Gusto compensations are mapped to CloudSuite GL dimensions using a configurable mapping table so payroll lines reference valid accounts. When a Gusto webhook indicates a payroll has been processed, ml-connector polls CloudSuite's GL account list to confirm all target accounts exist, then records the mapping for audit purposes. CloudSuite token refresh is proactive (before 1-hour expiry) to avoid retry loops. Rate-limit responses (429 from CloudSuite, or Gusto's 200 req/min limit) trigger exponential backoff and retry. Every employee and payroll record carries a full audit trail and can be replayed if a downstream mapping fails.

A real-world example

A growing professional services firm uses Infor CloudSuite (M3) for project costing, procurement, and GL management, and uses Gusto for payroll across three offices and multiple cost centers. Before the integration, the accounting team manually tracked which employees were assigned to which cost centers in Gusto, then reconciled those assignments against CloudSuite's GL cost center master at month-end, chasing discrepancies when employees transferred between projects or offices. With Gusto and Infor CloudSuite connected, each Gusto employee record includes a cost center code that maps directly to a CloudSuite GL dimension, and payroll runs automatically generate GL postings that allocate labor costs to the right project and office. The month-end reconciliation is now automated, and the accounting team spends less time on manual data entry and more time on analysis.

What you can do

  • Sync Gusto employee records (hire, termination, rehire, job change) into Infor CloudSuite to keep workforce data in agreement.
  • Map Gusto job codes and compensation levels to CloudSuite GL cost centers and GL accounts so payroll allocations land on valid dimensions.
  • Poll Infor CloudSuite on a schedule to fetch GL account and cost center master data, ensuring target accounts exist before payroll posts.
  • Authenticate Gusto with OAuth2 (Authorization Code flow) and Infor CloudSuite with ION API Gateway OAuth2, refreshing tokens proactively before expiry.
  • Retry on rate-limit and transient failures, with a full audit trail on every employee and payroll record for replay if a downstream mapping fails.

Questions

Which direction does data move between Infor CloudSuite and Gusto?
The primary flow is Gusto into Infor CloudSuite. Employee records, job codes, and compensation data move from Gusto into CloudSuite to keep GL cost center allocations in sync with the current payroll state. CloudSuite GL accounts and cost centers are read-only and serve as the master data for mapping; ml-connector does not write GL accounts or cost centers back to Gusto, since Gusto has no accounting dimensions.
How does ml-connector handle the lack of webhooks from Infor CloudSuite?
Infor CloudSuite does not support traditional webhooks; ION Desk document flows require admin configuration in the ION Desk portal rather than being programmable via API. ml-connector polls the ION API Gateway on a schedule aligned with your payroll calendar to fetch GL account and cost center data, ensuring all target accounts exist before payroll posts. This approach is reliable and avoids the need for ION Desk configuration on the customer's side.
What happens if a cost center or GL account in Gusto maps to an account that does not exist in Infor CloudSuite?
ml-connector validates all target GL accounts and cost centers against CloudSuite before recording a payroll mapping. If a target account does not exist, the record is flagged in the audit trail with a detailed error, and the payroll posting is held until the mapping is corrected. Gusto webhook notifications (if enabled) provide real-time payroll events, allowing ml-connector to catch and retry these issues quickly.

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