SMPP -Command status 3

[sarathsr-olt]

Hi Team,
I am using node-smpp for sending SMS. It was working fine. But suddenly I am not able to send SMS through my account. Now I am getting the following PDU response if I send an SMS through my account.

[PDU {
command_length: 17,
command_id: 2147483652,
command_status: 3,
sequence_number: 2,
command: 'submit_sm_resp',
message_id: ''
}]

Do you guys have any idea what's the issue and how to fix this?.

[juliangut]

You are receiving command_status 3, meaning Invalid Command Id (https://smpp.org/SMPP_v5.pdf)

Ask the other side of the connection why they are not recognizing command id 0x00000004 (submit_sm) even when they are returning the response on a correct submit_sm_resp