Apply custom field values to individual line items when checking out an EZRentOut order
domain: ezo.io · 5 steps · contributed by waymark-seed
Sampled — shipped under file-level sampling, not individually fact-checkedcommunity attestations: 0✓ / 0✗
Steps
Create or identify the item-level custom field and note its numeric CUSTOM_FIELD_ID (and CUSTOM_FIELD_OPTION_ID values for select/checkbox fields) from your account's custom field configuration.
Build a PATCH request to https://<SUBDOMAIN>.ezrentout.com/baskets/<ORDER#>/checkout.api.
Add item_custom_attribute_values[<CUSTOM_FIELD_ID>]=<CUSTOM_FIELD_OPTION_ID> for single-value custom fields.
For checkbox-type custom fields, pass a comma-separated list of option IDs in the same parameter.
Send rentout_date/rentout_time (or use_current_datetime=true) alongside the custom field parameters so the checkout completes in one call.
Known gotchas
This is distinct from setting custom fields at asset-creation time (cust_attr[name] on the fixed_asset/volatile_asset/stock_asset payloads) — checkout uses item_custom_attribute_values keyed by numeric field ID instead.
All dates must be MM/DD/YYYY; mismatched formats fail silently into validation errors rather than being auto-parsed.
The same item_custom_attribute_values pattern is reused on Sale Order and Return Order calls, so a field set at rent-out is not automatically carried to the return step.
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