Below are the common error messages returned and their respective descriptions :

• Duplicate reference number – Do not reuse the Reference Number of a previous successful payment transaction.

• Invalid merchant code – The merchant code does not exist.

• Invalid parameters – Some parameters passed to PayHalal are invalid or empty.

• Overlimit per transaction – You exceeded the amount per transaction that is assigned to the merchant’s account.

• Payment not allowed – The Payment method you requested is not allowed for the merchant’s account.

• Permission not allowed – Please ensure the Referer URL is the same as the one registered with PayHalal .

• Status not approved – Merchants account was suspended or not active.