Validate and enforce modifier group nesting depth across multiple delivery channel APIs

Steps

1. Audit your POS or master menu management system to identify all modifier groups with nested sub-modifiers (e.g., a burger with a sauce modifier that has a spice-level sub-modifier).
2. Research and document the maximum nesting depth supported by each target channel: note that channel limits vary and can be as shallow as one level on some platforms.
3. Build a validation function in your menu sync pipeline that traverses the modifier tree and flags any group that exceeds the target channel's maximum depth.
4. For over-nested items, implement a flattening strategy: either collapse nested options into a flat list with combined names, or exclude sub-modifiers that cannot be represented.
5. Test the flattened menu on each channel's staging environment to confirm the menu publishes without validation errors and renders correctly for customers.
6. Document the channel-specific nesting rules in your integration so future menu additions are authored within the supported constraints.