List legacy invoice due dates

When to use this endpoint

Use Customer_getValidInvoiceDueDates only for the legacy customer editor that stores a simple number-of-days override.

Newer mapped customer fields also support due-date modes and values beyond this short list; validate those through the mapped create/update contract.

Authentication and permissions

The handler does not require login or tenant context and reads no tenant data.

Parameters

This endpoint has no operation-specific parameters.

Example request

$options = FM_api('Customer_getValidInvoiceDueDates', []);

Example response

{
  "valid_dates": [0, 7, 14, 21, 28, 30, 45, 60, 90]
}

Errors and unusual responses

The handler has no validation or application-level error branch.

Behaviour and edge cases

• The array is hard-coded and is not affected by tenant invoice settings.
• 0 is a valid explicit override and is distinct from removing the customer override to inherit the global setting.
• There is no pagination or side effect.

See it in Fieldmotion

CRM1

The customer edit page loads this route to populate the legacy invoice due-date selector.

CRM2

No direct production CRM2 caller was found. CRM2 exposes the mapped due-date mode/value fields in configurable layouts.

Related endpoints

• Customer_edit accepts default_invoice_due_date and checks it against this list.
• Customer_updateData validates the newer mapped due-date mode/value pair.