If you are sending Speak2Leads lead information via HTTP Post, Speak2Leads will send a response code after each post received.

The response codes indicate if the lead information was received successfully or unsuccessfully.

SUCCESS:

inquiry received
 - inquiry was received during client business hours and a call generated.

After Hours - inquiry was received outside of client business hours.

Duplicate inquiry - inquiry is a duplicate.

FAILURE:

Invalid account ID - account ID is invalid. Double check that you are sending the "AccountID" field name. The value should be the exact account ID provided by S2L in your posting instructions. 
AccountID=<your account id>
Invalid location - location is invalid. This will be seen when routing calls based on the lead's location. Double check that the "location" field name is being sent to S2L. S2L should have a schedule in place matching the field value exactly as sent in the post (double check this in your Settings page).
 location=<lead's location>
Invalid Area - area is invalid. This will be seen when routing calls based on the lead's area. Double check that the "area" field name is being sent to S2L. S2L should have a schedule in place matching the field value exactly as sent in the post (double check this in your Settings page).
area=<lead's nature of inquiry>
Invalid lead phone number - lead phone number is invalid. Double check that a 10-digit (or 11-digit if the first number is a '1') phone number is being sent to S2L. The lead's phone number should be sent to one of S2L's phone field names (Phone1, Phone2, Phone3, or Phone4).
Phone1=<lead's phone number - must be 10 digits or if 11 digits, first number must be a '1'>