The SMPP Receiver agent generates DELIVER_SM UDRs and receives DELIVER_SM_RESP UDRs, while the SMPP Transmitter agent receives SUBMIT_SM UDRs and generates SUBMIT_SM_RESP UDRs.

DELIVER_SM UDRs

The following fields are included in the DELIVER_SM UDRs:

Field	Description
`data_coding (int)`	This field defines the encoding scheme of the short message user data, (3) Latin-1 (ISO-8859-1), or (8), USC2 (UTF-16BE). Note! Even though there are several other encoding schemes defined, the mentioned schemes are the only ones currently supported by the SMPP agents.
`dest_addr_npi (int)`	This field indicates the NPI (Numbering Plan Indicator) of the destination address.
`dest_addr_ton (int)`	This field indicates the TON (Type Of Number) of the destination address.
`destination_addr (string)`	This field contains the destination address.
`esm_class (int)`	This field is used for indicating special message attributes associated with the short message. Note! Currently only the messaging mode Store and Forward is supported.
`priority_flag (int)`	This field designates the priority level of the message.
`protocol_id (int)`	This field contains the Protocol Identifier. This is a network specific field.
`registered_delivery (int)`	This field indicates whether an SMSC delivery receipt or an SME acknowledgement is required or not.
`replace_if_present_flag (int)`	This field indicates whether a submitted message should replace an existing message or not.
`schedule_delivery_time (string)`	This field defines when the short message is to be scheduled by the SMSC for delivery. Set to NULL for immediate message delivery.
`sequence_number (int)`	This field is used for correlating responses with requests. The allowed `sequence_number` range is from 0x00000001 to 0x7FFFFFFF.
`service_type (string)`	This field can be used to indicate the SMS Application service associated with the message. Set to NULL for default SMSC settings.
`short_message (bytearray)`	This field contains the actual SM (Short Message) which can consist of up to 254 octets of user data. Note! Long messages are not supported.
`sm_default_msg_id (int)`	If the SM is to be sent from a list of pre-defined ('canned') SMs stored on the SMSC, this field indicates the ID of the SM. If not using an SMSC canned message, set to NULL.
`source_addr (string)`	This field contains the source address.
`source_addr_npi (int)`	This field indicates the NPI (Numbering Plan Indicator) of the source address.
`source_addr_ton (int)`	This field indicates the TON (Type Of Number) of the source address.
`validity_period (string)`	This field indicates the validity period of this message. Set to NULL to request the SMSC default validity period.
`OriginalData (bytearray)`	This field contains the original data in bytearray format.

DELIVER_SM_RESP UDRs

The following fields are included in the DELIVER_SM_RESP UDRs:

Field	Description
`command_status (int)`	This field of an SMPP message response indicates the success or failure of an SMPP request.
`OriginalData (bytearray)`	This field contains the original data in bytearray format.

SUBMIT_SM UDRs

The following fields are included in the SUBMIT_SM UDRs:

Field	Description
`data_coding (int)`	This field defines the encoding scheme of the short message user data, (3) Latin-1 (ISO-8859-1), or (8), USC2 UTF-16BE). Note! Even though there are several other encoding schemes defined, the mentioned schemes are the only ones currently supported by the SMPP agents.
`dest_addr_npi (int)`	This field indicates the NPI (Numbering Plan Indicator) of the destination address.
`dest_addr_ton (int)`	This field indicates the TON (Type Of Number) of the destination address.
`destination_addr (string)`	This field contains the destination address.
`esm_class (int)`	This field is used for indicating special message attributes associated with the short message. Note! Currently only the messaging mode Store and Forward is supported.
`priority_flag (int)`	This field designates the priority level of the message.
`protocol_id (int)`	This field contains the Protocol Identifier. This is a network specific field.
`registered_delivery (int)`	This field indicates whether an SMSC delivery receipt or an SME acknowledgement is required or not.
`replace_if_present_flag (int)`	This field indicates whether a submitted message should replace an existing message or not.
`schedule_delivery_time (string)`	This field defines when the short message is to be scheduled by the SMSC for delivery. Set to NULL for immediate message delivery.
`service_type (string)`	This field can be used to indicate the SMS Application service associated with the message. Set to NULL for default SMSC settings.
`short_message (bytearray)`	This field contains the actual SM (Short Message) which can consist of up to 254 octets of user data. Note! Long messages are not supported.
`sm_default_msg_id (int)`	If the SM is to be sent from a list of pre-defined ('canned') SMs stored on the SMSC, this field indicates the ID of the SM. If not using an SMSC canned message, set to NULL.
`source_addr (string)`	This field contains the source address.
`source_addr_npi (int)`	This field indicates the NPI (Numbering Plan Indicator) of the source address.
`source_addr_ton (int)`	This field indicates the TON (Type Of Number) of the source address.
`validity_period (string)`	This field indicates the validity period of this message. Set to NULL to request the SMSC default validity period.
`OriginalData (bytearray)`	This field contains the original data in bytearray format.

SUBMIT_SM_RESP UDRs

The following fields are included SUBMIT_SM_RESP UDRs:

Field	Description
`command_status (int)`	This field of an SMPP message response indicates the success or failure of an SMPP request.
`message_id (string)`	This field contains the unique message identifier reference assigned by the SMSC to each submitted short message. It is an opaque value and is set according to SMSC implementation.
`submitSmUDR (SUBMIT_SM (SMPP))`	his field contains the `SUBMIT_SM` UDR for which this `SUBMIT_SM_RESP` has been received.
`OriginalData (bytearray)`	This field contains the original data in bytearray format.

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9.73.6 SMPP Examples

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