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STKPush with Paybill
I am getting an error "Merchant does not exist" when trying to initiate STKPush usin a Paybill number (not Till nuber). Does this call work for Paybill as well?   This is  a recent activation and last I asked was told Paybill should work as well, is there something I am supposed to do?   { "requestId": "11622-6951645-1", "errorCode": "500.001.1001", "errorMessage": "[MerchantValidate] - Merchant does not exist" }