Having trouble sending via our API?
Here are some things to help you identify the cause.
Step 1: Are you receiving an error code?
No: Go to Step 2
Yes: See the specific error code below for more information.
|-100||Not Enough Credits|
|-300||General Database Error|
|-302||Return XML Error|
|-303||Received XML Error|
|-400||Some numbers in list failed|
|-401||Invalid Destination Address|
|-402||Invalid Source Address – Alphanumeric too long|
|-403||Invalid Source Address – Invalid Number|
|-405||Invalid Validity Period|
|-406||No Route Available|
|-407||Invalid Schedule Date|
|-408||Distribution List is Empty|
|-409||Group is Empty|
|-410||Invalid Distribution List|
|-411||You have exceeded the limit of messages you can send in a single day to a single number|
|-412||Number is blacklisted|
|-503||Unknown Message ID|
|-504||Invalid From Timestamp|
|-505||Invalid To Timestamp|
|-506||Source Address Not Allowed (Email2SMS)|
|-508||Error Creating User|
|-510||You cannot set a user’s credits to be less than 0|
|-511||The system is down for maintenance|
|-513||License in use|
|-515||No License available|
|-517||Unable to create List|
|-601||Unknown Report Type|
|-701||No UserID Specified|
|-702||Invalid Amount Specified|
|-703||Invalid Currency Requested|
Step 2: The issue is likely with your application
If you are experiencing problems using the API and not receiving an error code in return the most likely cause is that we are not receiving anything from your application. Please check that you are using the correct api url:
- HTTP: https://my.fastsms.co.uk/api
- XML: https://my.fastsms.co.uk/xmlapi
Step 3: Additional things to try
i. Does it work from the XML test interface (if using XML)? If yes, the issue is likely either the XML created by your application, or the firewalls/network in between them.
ii. Can you traceroute (windows: tracert) to my.fastsms.co.uk
iii. Can you telnet from that machine to my.fastsms.co.uk (port 80)
iv. Does it work from another machine?
If you believe everything to be correct please contact us using the Live Chat at the bottom of the page.
Please note that due to the technical nature of the API our operators may need to pass you to a specialist.