The request data is sent as an additional input parameter:

ParameterTypeValue
updatepricinggroupascii[0-9a-zA-Z_-]{0,32}
Unique reference identifying the pricing group to assign the merchant to.

Example Request

curl --cacert rootCA.pem --key partner.key --cert partner.pem -d 
"login=ppropartnertest&password=p1&reference=MERCHANT0001&pricinggroup=Tier1" 
https://boardingapi.girogate.de/updatepricinggroup