Set up or change your ShopeePay PIN for each individual store to authorize a refund via the Partner App / Web Portal.
ShopeePay PIN will need to be shared with store staff to initiate a refund.
Shopee Partner App:
Tab on Settings > Enter Verification Code > click Continue > Input your desired PIN under Create / Change Store PIN.
Shopee Partner Web Portal:
Tab on Settings > Accounts > Create / Update Store PIN