| 0x00000000 | No error | |
| 0x00000001 | Message Lenght is invalid | |
| 0x00000002 | Command Length is invalid | |
| 0x00000003 | Invalid Command ID | |
| 0x00000004 | Incorrect BIND Status for given command | |
| 0x00000005 | ESME Already in Bound State | |
| 0x00000006 | Invalid Priority Flag | |
| 0x00000007 | Invalid Registered Delivery Flag | |
| 0x00000008 | Reserved | |
| 0x0000000A | Invalid Source Adress | |
| 0x0000000B | Invalid Dest Addr | |
| 0x0000000C | Message ID is invalid | |
| 0x0000000D | Bind Failed | |
| 0x0000000E | Invalid Password | |
| 0x0000000F | Invalid System ID | |
| 0x00000010 | Reserved | |
| 0x00000011 | Cancel SM Failed | |
| 0x00000012 | Reserved | |
| 0x00000013 | Replace SM Failed | |
| 0x00000014 | Message Queue Full | |
| 0x00000015 | Invalid Service Type | |
| 0x00000016 - 0x0000003F | Reserved | |
| 0x00000040 | Destination flag is invalid (submit_multi) | |
| 0x00000041 | Reserved | |
| 0x00000042 | Invalid 'submit with replace' request (i.e submit_sm with replace_if_present_flag set) | |
| 0x00000043 | Invalid asm_class field data | |
| 0x00000044 | Cannot Submit to Distribution List | |
| 0x00000045 | submit_sm or submit_multi failed | |
| 0x00000046 - 0x00000047 | Reserved | |
| 0x00000048 | Invalid Source address TON | |
| 0x00000049 | Invalid Source address | |
| 0x00000050 | Invalid Source address NPI | |
| 0x00000051 | Invalid Destination address NPI | |
| 0x00000052 | Reserved | |
| 0x00000053 | Invalid system_type field | |
| 0x00000054 | Invalid replace_if_present flag | |
| 0x00000055 | Invalid number og messages | |
| 0x00000056 - 0x00000057 | Reserved | |
| 0x00000058 | Throttling error (ESME has exceeded allowed message limits) | |
| 0x00000059 - 0x00000060 | Reserved | |
| 0x00000061 | Invalid Scheduled Delivery Time | |
| 0x00000062 | Invalid message validity period(Expiry time) | |
| 0x00000063 | Predefined Message Invalid or Not Found | |
| 0x00000064 | ESME Receiver Temporary App Error Code | |
| 0x00000065 | ESME Receiver Permanent App Error Code | |
| 0x00000066 | ESME Receiver Reject Message Error Code | |
| 0x00000067 | query_sm request failed | |
| 0x00000068 - 0x000000BF | Reserved | |
| 0x000000C0 | Error in the optional part og the PDU Body. | |
| 0x000000C1 | Optional Parameter not allowed | |
| 0x000000C2 | Invalid Parameter Length | |
| 0x000000C3 | Expected Optional Parameter missing | |
| 0x000000C4 | Invalid Optional Parameter Value | |
| 0x000000C5 - 0x000000FD | Reserved | |
| 0x000000FE | Delivery Failure (used for data_sm_resp) | |
| 0x000000FF | Unknown Error | |
| 0x00000100 - 0x000003FF | Reserved for SMPP extension | |
| 0x00000400 - 0x000004FF | Reserved for SMSC vendor specific errors | |
| 0x00000500 - 0xFFFFFFFF | Reserved | |