After a te message you receive shortly a tu message that contains the real trade id (TRD_ID) and additional/updated fields.

[
   0,
   "te",
   [
      "<TRD_SEQ>",
      "<TRD_PAIR>",
      "<TRD_TIMESTAMP>",
      "<TRD_ORD_ID>",
      "<TRD_AMOUNT_EXECUTED>",
      "<TRD_PRICE_EXECUTED>",
      "<ORD_TYPE>",
      "<ORD_PRICE>"
   ]
]

[
   0,
   "tu",
   [
      "<TRD_SEQ>",
      "<TRD_ID>",
      "<TRD_PAIR>",
      "<TRD_TIMESTAMP>",
      "<TRD_ORD_ID>",
      "<TRD_AMOUNT_EXECUTED>",
      "<TRD_PRICE_EXECUTED>",
      "<ORD_TYPE>",
      "<ORD_PRICE>",
      "<FEE>",
      "<FEE_CURRENCY>"
   ]
]

Abbreviated Terms Glossary

Term	Definition
ps	position snapshot
pn	new position
pu	position update
pc	position close
ws	wallet snapshot
wu	wallet update
os	order snapshot
on	new order
ou	order update
oc	order cancel
te	trade executed
tu	trade execution update

❗️
Error Codes
10100 : Authentication failure (generic)
10101 : Already authenticated
10102 : Authentication Payload Error
10103 : Authentication Signature Error
10104 : Authentication HMAC Error