| Error Code | Description |
| 0 | No Error |
| 1000 | Exception - General |
| 1001 | Authentication Exception - General |
| 1002 | Licensing Exception - General |
| 1005 | Invalid Username or Password |
| 1006 | Missing or Incorrectly Formatted Authorization Header |
| 1010 | Session Not Found |
| 1011 | Missing Session-ID Header |
| 1014 | Your account has been logged in from a different location |
| 1020 | License Count Exceeded - No available seats left |
| 1025 | User Credentials are marked as Inactive |
| 1035 | User belongs to an excluded group |
| 1040 | External User is not restricted to APIUserCustomer |
| 2000 | General Permission Exception - User does not have permission to complete the request |
| 2001 | User does not have API Object permission for the requested object |
| 2002 | User does not have API Property permission for the requested property |
| 2003 | User does not have API Visual permission for the requested object |
| 2004 | User is filtered in API User Customer and does not have access to requested customer |
| 2005 | User does not have API Group permission to perform the requested action |
| 3001 | Json Object could not be successfully parsed |
| 3005 | Json Object is missing required fields |
| 3010 | Request cannot be fulfilled. Reason should be provided in message. |
| 4004 | Requested object was not found in the database |
| 4014 | Sales Document was not found in the database |
| 4024 | Sales Line Item was not found in the database |
| 4034 | Customer was not found in the database |
| 4044 | Purchase Order was not found in the database |
| 4054 | Purchase Line Item was not found in the database |
| 4064 | Service Transfer was not found in the database |
| 4074 | Service Transfer Line was not found in the database |
| 5001 | Conflict - General |
| 5005 | Sales Document lock not obtainable |
| 5007 | Sales Document is ReadOnly and can not be updated |
| 5010 | An exception was encountered during save of object |
| 5015 | Purchase Order lock not obtainable |
| 5025 | Service Transfer lock not obtainable |
| 6005 | Address not successfully validated with UPS Shipping API |
| 7001 | A SalesPad Security Setting has a missing or invalid value. |
| 7002 | A SalesPad Setting has a missing or invalid value. |
| 8000 | One or more values does not pass validation. |
| 8001 | A SalesLineItem value does not pass validation |