Flexfields for Price List Header REST Endpoints

Order Management/Price Lists/Price List Items/Rate Plans/Rate Plan Charges/Tier Headers/Flexfields for Price List Header
The Flexfields for Price List Header resource associates descriptive flexfield segments and its values with a price list.
Create tier header flexfields
Method: post
Path: /fscmRestApi/resources/11.13.18.05/priceLists/{PriceListId}/child/items/{PriceListItemId}/child/ratePlans/{RatePlanId}/child/ratePlanCharges/{RatePlanChargeId}/child/pricingTiers/{TierHeaderId}/child/headerDFF
Get all tier header flexfields
Method: get
Path: /fscmRestApi/resources/11.13.18.05/priceLists/{PriceListId}/child/items/{PriceListItemId}/child/ratePlans/{RatePlanId}/child/ratePlanCharges/{RatePlanChargeId}/child/pricingTiers/{TierHeaderId}/child/headerDFF
Get one tier header flexfield
Method: get
Path: /fscmRestApi/resources/11.13.18.05/priceLists/{PriceListId}/child/items/{PriceListItemId}/child/ratePlans/{RatePlanId}/child/ratePlanCharges/{RatePlanChargeId}/child/pricingTiers/{TierHeaderId2}/child/headerDFF/{TieredPricingHeaderId}
Update one tier header flexfield
Method: patch
Path: /fscmRestApi/resources/11.13.18.05/priceLists/{PriceListId}/child/items/{PriceListItemId}/child/ratePlans/{RatePlanId}/child/ratePlanCharges/{RatePlanChargeId}/child/pricingTiers/{TierHeaderId2}/child/headerDFF/{TieredPricingHeaderId}