Remove tier price from product
/V1/products/{sku}/group-prices/{customerGroupId}/tiers/{qty}
(Required)
<string>
(Required) 'all' can be used to specify 'ALL GROUPS'
<string>
(Required)
<number>
Get tier price of product
/V1/products/{sku}/group-prices/{customerGroupId}/tiers
(Required)
<string>
(Required) 'all' can be used to specify 'ALL GROUPS'
<string>