ToolerCat / Decline Codes / Decline code 03 — Invalid merchant

Decline code 03 — Invalid merchant

Invalid merchant. Configuration problem on the acquirer side (MID/MCC/terminal). Contact your acquirer / PSP.

ISO 8583 response code 03.

Code

03 ISO 8583

Meaning

Invalid merchant

Type

hard decline

Retry?

What to do

Configuration problem on the acquirer side (MID/MCC/terminal). Contact your acquirer / PSP.

Tell the customer

“Payment could not be processed. Please try another method.”