Data loss observed at server, but EC200 provide Tx response success

Hi team,
I am using EC200U model, and accessing it via AT command(log mentioned below).
where at server I have observed data loss,
But I have confirmed with +QISEND: 877xx,877xx,0 where data successfully sent to server,
Could you please have a look at below mentioned log.
where the response of each command is mentioned.
Any input from your side is helpful for us,
Thank you!

ATV1

OK
}
AT: {
ATE0

OK
}
AT: {

OK
}
AT: {

869009063777XXX

OK
}
AT: {

EC200U

OK
}
AT: {

Quectel

OK
}
AT: {

EC200UCNAAR02A13M08

OK
}
AT: {

+CPIN: READY

OK
}
AT: {

+QCCID: 89911100001263399XXXX

OK
}
AT: {

405852566539610

OK
}
AT: {

+CSQ: 99,99

OK
}
AT: {

+CPIN: READY

OK
}
AT: {

+CREG: 0,0

OK
}
AT: {

+CREG: 0,0

OK
}
AT: {

+CREG: 0,0

OK
}
AT: {

+CREG: 0,5

OK
}
AT: {

+CGREG: 0,5

OK
}
AT: {

+CEREG: 0,5

OK
}
AT: {

+CSQ: 23,99

OK
}
AT: {

OK
}
AT: {

OK
}
AT: {

+QIACT: 1,1,1,“10.17.176.141”

OK
}
AT: {

OK
}
AT: {

OK
}
AT: {

OK
}
AT: {

+QLTS: “2025/02/11,11:17:16+22,0”

OK
}
AT: {

+QISEND: 0,0,0

OK
}
AT: {

SEND OK
}
AT: {

+QISEND: 174,174,0

OK
}
AT: {

SEND OK
}
AT: {

+QISEND: 1163,1163,0

OK
}
AT: {

SEND OK
}
AT: {

+QISEND: 2152,2152,0

OK
}
AT: {

SEND OK
}
AT: {

+QISEND: 3141,3141,0

OK
}
AT: {

SEND OK
}
AT: {

+QISEND: 4130,4130,0

OK
}
AT: {

SEND OK
}
AT: {

+QLTS: “2025/02/11,11:17:42+22,0”

OK
}
AT: {

+QISEND: 5119,5119,0

OK
}
AT: {

SEND OK
}
AT: {

+QISEND: 6108,6108,0

OK
}
AT: {

SEND OK
}
AT: {

+QISEND: 6179,6179,0

OK
}
AT: {

SEND OK
}
AT: {

+QISEND: 7168,7168,0

OK
}
AT: {

SEND OK
}
AT: {

+QISEND: 8157,8157,0

OK
}
AT: {

SEND OK
}
AT: {

+QISEND: 9146,9146,0

OK
}
AT: {

SEND OK
}
AT: {

+QISEND: 10135,10135,0

OK
}
AT: {

SEND OK
}
AT: {

+QISEND: 11124,11124,0

OK
}
AT: {

SEND OK
}
AT: {

+QISEND: 12113,12113,0

OK
}
AT: {

SEND OK
}
AT: {

+QISEND: 13102,13102,0

OK
}
AT: {

SEND OK
}
AT: {

+QISEND: 14091,14091,0

OK
}
AT: {

SEND OK
}
AT: {

+QLTS: “2025/02/11,11:18:10+22,0”

OK
}
AT: {

+QISEND: 15080,15080,0

OK
}
AT: {

SEND OK
}
AT: {

+QLTS: “2025/02/11,11:18:12+22,0”

OK
}
AT: {

+QISEND: 15298,15298,0

OK
}
AT: {

SEND OK
}
AT: {

+QISEND: 15369,15369,0

OK
}
AT: {

SEND OK
}
AT: {

+QISEND: 16358,16358,0

OK
}
AT: {

SEND OK
}
AT: {

+QISEND: 17347,17347,0

OK
}
AT: {

SEND OK
}
AT: {

+QISEND: 18336,18336,0

OK
}
AT: {

SEND OK
}
AT: {

+QISEND: 19325,19325,0

OK
}
AT: {

SEND OK
}
AT: {

+QISEND: 20314,20314,0

OK
}
AT: {

SEND OK
}
AT: {

+QISEND: 21303,21303,0

OK
}
AT: {

SEND OK
}
AT: {

+QISEND: 22292,22292,0

OK
}
AT: {

SEND OK
}
AT: {

+QISEND: 23281,23281,0

OK
}
AT: {

SEND OK
}
AT: {

+QLTS: “2025/02/11,11:18:42+22,0”

OK
}
AT: {

+QISEND: 24270,24270,0

OK
}
AT: {

SEND OK
}
AT: {

+QISEND: 24341,24341,0

OK
}
AT: {

SEND OK
}
AT: {

+QISEND: 25330,25330,0

OK
}
AT: {

SEND OK
}
AT: {

+QISEND: 26319,26319,0

OK
}
AT: {

SEND OK
}
AT: {

+QISEND: 27308,27308,0

OK
}
AT: {

SEND OK
}
AT: {

+QISEND: 28297,28297,0

OK
}
AT: {

SEND OK
}
AT: {

+QISEND: 29286,29286,0

OK
}
AT: {

SEND OK
}
AT: {

+QISEND: 30275,30275,0

OK
}
AT: {

SEND OK
}
AT: {

+QISEND: 31264,31264,0

OK
}
AT: {

SEND OK
}
AT: {

+QISEND: 32253,32253,0

OK
}
AT: {

SEND OK
}
AT: {

+QLTS: “2025/02/11,11:19:10+22,0”

OK
}
AT: {

+QISEND: 33242,33242,0

OK
}
AT: {

SEND OK
}
AT: {

+QLTS: “2025/02/11,11:19:12+22,0”

OK
}
AT: {

+QISEND: 33460,33460,0

OK
}
AT: {

SEND OK
}
AT: {

+QISEND: 33531,33531,0

OK
}
AT: {

SEND OK
}
AT: {

+QISEND: 34520,34520,0

OK
}
AT: {

SEND OK
}
AT: {

+QISEND: 35509,35509,0

OK
}
AT: {

SEND OK
}
AT: {

+QISEND: 36498,36498,0

OK
}
AT: {

SEND OK
}
AT: {

+QISEND: 37487,37487,0

OK
}
AT: {

SEND OK
}
AT: {

+QISEND: 38476,38476,0

OK
}
AT: {

SEND OK
}
AT: {

+QISEND: 39465,39465,0

OK
}
AT: {

SEND OK
}
AT: {

+QISEND: 40454,40454,0

OK
}
AT: {

SEND OK
}
AT: {

+QISEND: 41443,41443,0

OK
}
AT: {

SEND OK
}
AT: {

+QLTS: “2025/02/11,11:19:42+22,0”

OK
}
AT: {

+QISEND: 42432,42432,0

OK
}
AT: {

SEND OK
}
AT: {

+QISEND: 42503,42503,0

OK
}
AT: {

SEND OK
}
AT: {

+QISEND: 43492,43492,0

OK
}
AT: {

SEND OK
}
AT: {

+QISEND: 44481,44481,0

OK
}
AT: {

SEND OK
}
AT: {

+QISEND: 45470,45470,0

OK
}
AT: {

SEND OK
}
AT: {

+QISEND: 46459,46459,0

OK
}
AT: {

SEND OK
}
AT: {

+QISEND: 47448,47448,0

OK
}
AT: {

SEND OK
}
AT: {

+QISEND: 48437,48437,0

OK
}
AT: {

SEND OK
}
AT: {

+QISEND: 49426,49426,0

OK
}
AT: {

SEND OK
}
AT: {

+QISEND: 50415,50415,0

OK
}
AT: {

SEND OK
}
AT: {

+QLTS: “2025/02/11,11:20:10+22,0”

OK
}
AT: {

+QISEND: 51404,51404,0

OK
}
AT: {

SEND OK
}
AT: {

+QLTS: “2025/02/11,11:20:12+22,0”

OK
}
AT: {

+QISEND: 51622,51622,0

OK
}
AT: {

SEND OK
}
AT: {

+QISEND: 51691,51691,0

OK
}
AT: {

SEND OK
}
AT: {

+QISEND: 52680,52680,0

OK
}
AT: {

SEND OK
}
AT: {

+QISEND: 53669,53669,0

OK
}
AT: {

SEND OK
}
AT: {

+QISEND: 54658,54658,0

OK
}
AT: {

SEND OK
}
AT: {

+QISEND: 55647,55647,0

OK
}
AT: {

SEND OK
}
AT: {

+QISEND: 56636,56636,0

OK
}
AT: {

SEND OK
}
AT: {

+QISEND: 57625,57625,0

OK
}
AT: {

SEND OK
}
AT: {

+QISEND: 58614,58614,0

OK
}
AT: {

SEND OK
}
AT: {

+QISEND: 59603,59603,0

OK
}
AT: {

SEND OK
}
AT: {

+QLTS: “2025/02/11,11:20:42+22,0”

OK
}
AT: {

+QISEND: 60592,60592,0

OK
}
AT: {

SEND OK
}
AT: {

+QISEND: 60661,60661,0

OK
}
AT: {

SEND OK
}
AT: {

+QISEND: 61650,61650,0

OK
}
AT: {

SEND OK
}
AT: {

+QISEND: 62639,62639,0

OK
}
AT: {

SEND OK
}
AT: {

+QISEND: 63628,63628,0

OK
}
AT: {

SEND OK
}
AT: {

+QISEND: 64617,64617,0

OK
}
AT: {

SEND OK
}
AT: {

+QISEND: 65606,65606,0

OK
}
AT: {

SEND OK
}
AT: {

+QISEND: 66595,66595,0

OK
}
AT: {

SEND OK
}
AT: {

+QISEND: 67584,67584,0

OK
}
AT: {

SEND OK
}
AT: {

+QISEND: 68573,68573,0

OK
}
AT: {

SEND OK
}
AT: {

+QLTS: “2025/02/11,11:21:10+22,0”

OK
}
AT: {

+QISEND: 69562,69562,0

OK
}
AT: {

SEND OK
}
AT: {

+QLTS: “2025/02/11,11:21:12+22,0”

OK
}
AT: {

+QISEND: 69778,69778,0

OK
}
AT: {

SEND OK
}
AT: {

+QISEND: 69847,69847,0

OK
}
AT: {

SEND OK
}
AT: {

+QISEND: 70836,70836,0

OK
}
AT: {

SEND OK
}
AT: {

+QISEND: 71825,71825,0

OK
}
AT: {

SEND OK
}
AT: {

+QISEND: 72814,72814,0

OK
}
AT: {

SEND OK
}
AT: {

+QISEND: 73803,73803,0

OK
}
AT: {

SEND OK
}
AT: {

+QISEND: 74792,74792,0

OK
}
AT: {

SEND OK
}
AT: {

+QISEND: 75781,75781,0

OK
}
AT: {

SEND OK
}
AT: {

+QISEND: 76770,76770,0

OK
}
AT: {

SEND OK
}
AT: {

+QISEND: 77759,77759,0

OK
}
AT: {

SEND OK
}
AT: {

+QLTS: “2025/02/11,11:21:42+22,0”

OK
}
AT: {

+QISEND: 78748,78748,0

OK
}
AT: {

SEND OK
}
AT: {

+QISEND: 78817,78817,0

OK
}
AT: {

SEND OK
}
AT: {

+QISEND: 79806,79806,0

OK
}
AT: {

SEND OK
}
AT: {

+QISEND: 80795,80795,0

OK
}
AT: {

SEND OK
}
AT: {

+QISEND: 81784,81784,0

OK
}
AT: {

SEND OK
}
AT: {

+QISEND: 82773,82773,0

OK
}
AT: {

SEND OK
}
AT: {

+QISEND: 83762,83762,0

OK
}
AT: {

SEND OK
}
AT: {

+QISEND: 84751,84751,0

OK
}
AT: {

SEND OK
}
AT: {

+QISEND: 85740,85740,0

OK
}
AT: {

SEND OK
}
AT: {

+QISEND: 86729,86729,0

OK
}
AT: {

SEND OK
}
AT: {

+QLTS: “2025/02/11,11:22:11+22,0”

OK
}
AT: {

+QISEND: 87718,87718,0

OK
}
AT: {

SEND OK
}
AT: {

+QLTS: “2025/02/11,11:22:13+22,0”

OK
}
AT: {

+QISEND: 87936,87936,0

OK
}
AT: {

SEND OK
}
AT: {

+QISEND: 88007,88007,0

OK
}
AT: {

SEND OK
}
AT: {

+QISEND: 88996,88996,0

OK
}
AT: {

SEND OK
}
AT: {

+QISEND: 89985,89985,0

Hi,
Just from AT log, it seems everything work normally. And your test firmware version EC200UCNAAR02A13M08 is too old, it is highly recommended to upgrade to the latest firmware EC200UCNAAR03A14M08 and arrange validation. I will share the latest firmware to you via email. If it is still failure, please capture AP/CP log of module to do further checking.