Order FAILED — Order_Error | DH-906 | Basic Order Validation has Failed

I have been placing AMO orders since the last 24 hours i.e. since the market closed on Friday and till then also, but from Saturday onwards suddenly all the scripts started showing errors. Is this an issue at the individual ID level or has Dhan updated something at their end? How will I know? While my data API is also active, and there is no problem in that, as I am able to pull the option data.

PRESET_ORDER = {
“token”: “”,
“client”: “”,
“securityId”: 9590,
“exchangeSegment”: “NSE_EQ”,
“transactionType”: “BUY”,
“productType”: “CNC”,
“orderType”: “LIMIT”,
“quantity”: 1,
“price”: 7568.00,
“afterMarketOrder”: True,
“amoTime”: “OPEN”,
“correlationId”: None,
“disclosedQuantity”: None,
“boProfitValue”: None,
“boStopLossValue”: None,
}

Try 1: Error

9/21/2025 7:46 PLACE_ARGS ASTRAMICRO {“dhanClientId”: “”, “correlationId”: “cd13c943a2d4”, “transactionType”: “BUY”, “exchangeSegment”: “NSE_EQ”, “productType”: “CNC”, “orderType”: “LIMIT”, “validity”: “DAY”, “securityId”: “11618”, “quantity”: “3”, “price”: “1098.55”, “afterMarketOrder”: true, “amoTime”: “OPEN”}
9/21/2025 7:46 PLACE_LIMIT_AMO ASTRAMICRO 400 {“errorType”: “Input_Exception”, “errorCode”: “DH-905”, “errorMessage”: “Invalid SecurityId”}

Try 2: Error:

HEADERS →
{
“Content-Type”: “application/json”,
“access-token”: “Token”
}

HTTP 400

RESPONSE HEADERS →
Date: Sun, 21 Sep 2025 02:24:12 GMT
Content-Type: application/json
Transfer-Encoding: chunked
Connection: keep-alive
Vary: Origin, Access-Control-Request-Method, Access-Control-Request-Headers

RESPONSE JSON ←
{
“errorType”: “Input_Exception”,
“errorCode”: “DH-905”,
“errorMessage”: “Invalid SecurityId”
}

RAW REQUEST BODY (as sent) →
{“dhanClientId”: “”, “correlationId”: “d0d37749a715”, “transactionType”: “BUY”, “exchangeSegment”: “NSE_EQ”, “productType”: “CNC”, “orderType”: “LIMIT”, “validity”: “DAY”, “securityId”: 9590, “quantity”: 1, “afterMarketOrder”: true, “amoTime”: “OPEN”, “price”: “7568.50”}

This is system level issue discussed in another thread of me.

I hope some one or their support team acknowledge this quickly.

Thank you siddhant_jain for your response.