POS Systems Error Code
Systems & Devices
POS Systems
06 | Error
Industry
Systems & Devices
Canonical
/systems/pos-systems/error-codes/06/
Last Updated
Feb 27, 2026
Summary
A generic issuer or network error occurred; the transaction could not be processed as submitted.
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What This Code Means
Response code 06 is a generic error response used by some issuers/networks when they cannot process the authorization normally. It does not pinpoint a specific decline reason and may be transient.
Where Users Usually See This Code
- Intermittent processing failures at the terminal
- Processor logs during network instability
Why This Code Appears
- Issuer processing error
- Network or switch issue during authorization routing
- Malformed or incomplete request data
What Typically Happens Next
- The transaction declines and may succeed on retry
- Some terminals prompt to retry or use another method
What This Code Is Not
- It is not a definitive “insufficient funds” code
- It is not always a card status issue
Troubleshooting Checklist
- □ Retry once after confirming network connectivity
- □ If repeated, try a different card or payment method
- □ Check processor/gateway logs for additional diagnostic text
- □ Contact processor support if errors cluster across many transactions
Notes And Edge Cases
Some processors map 06 to a generic decline; the more specific reason may appear in extended response fields.
Related Codes
8 links
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