Error: 'INVALID_SIZE_PRECISION',Too many decimals in order amount

Advanced Trade API
1

Hello guys, Please where can I get the exact precision to use in opening a take profit order or stop loss order.

I used this endpoint (brokerage/products) to get the product details, then filtered it by the product_id, then used the base_min_size for the base_size and quote_min_size for the limit_price but still having the same error for SOL-USD

Please how do I navigate this?

2

You need to look at / use base_increment and quote_increment/price_increment when you format sizes.

3

Thanks for your kind response, but it still didn’t work. In this case I am trying to open a SOL-USD Order.

This is the order response.

{
  success: false,
  failure_reason: 'UNKNOWN_FAILURE_REASON',
  order_id: '',
  error_response: {
    error: 'INVALID_SIZE_PRECISION',
    message: 'Too many decimals in order amount',
    error_details: '',
    preview_failure_reason: 'PREVIEW_INVALID_SIZE_PRECISION'
  },
  order_configuration: {
    limit_limit_gtc: {
      base_size: '0.17491370',
      limit_price: '118.87',
      post_only: false
    }
  }
}

Please what am I doing wrongly?

This is the product Details for this pair.

{
  product_id: 'SOL-USD',
  price: '51754.7',
  price_percentage_change_24h: '0.03160131701146',
  volume_24h: '18517.26400139',
  volume_percentage_change_24h: '-8.53001199855768',
  base_increment: '0.00000001',
  quote_increment: '0.01',
  quote_min_size: '1',
  quote_max_size: '150000000',
  base_min_size: '0.000016',
  base_max_size: '3400',
  base_name: 'Bitcoin',
  quote_name: 'USDC',
  watched: false,
  is_disabled: false,
  new: false,
  status: 'online',
  cancel_only: false,
  limit_only: false,
  post_only: false,
  trading_disabled: false,
  auction_mode: false,
  product_type: 'SPOT',
  quote_currency_id: 'USDC',
  base_currency_id: 'BTC',
  fcm_trading_session_details: null,
  mid_market_price: '',
  alias: 'BTC-USD',
  alias_to: [],
  base_display_symbol: 'BTC',
  quote_display_symbol: 'USD',
  view_only: false,
  price_increment: '0.01',
  display_name: 'BTC-USDC'
}
4

Where are you getting product details/info? SOL-USD and SOL-EUR for me has 0.001 precision! So you can specify only 0.174…

5

https://api.coinbase.com/api/v3/brokerage/products

I am using this link. please which are you using?

6

Same, but SOL-USD for me has following data:

{"product_id":"SOL-USD", "price":"112.62", "price_percentage_change_24h":"-4.04703075743376", "volume_24h":"1050133.507", "volume_percentage_change_24h":"-4.04358172032179", "base_increment":"0.001", "quote_increment":"0.01", "quote_min_size":"1", "quote_max_size":"25000000", "base_min_size":"0.08", "base_max_size":"1274000", "base_name":"Solana", "quote_name":"US Dollar", "watched":false, "is_disabled":false, "new":false, "status":"online", "cancel_only":false, "limit_only":false, "post_only":false, "trading_disabled":false, "auction_mode":false, "product_type":"SPOT", "quote_currency_id":"USD", "base_currency_id":"SOL", "fcm_trading_session_details":null, "mid_market_price":"", "alias":"", "alias_to":["SOL-USDC"], "base_display_symbol":"SOL", "quote_display_symbol":"USD", "view_only":false, "price_increment":"0.01", "display_name":"SOL-USD"}

Also look at price, your data shows that SOL-USD price is 51754.7… I guess you are actually trying to use BTC-USD data… Oh, it even mentions Bitcoin… Looks like you have some problems fetching products!

7

Oh wow, what do you think is causing the inconsistency?

8

Check your code for mistakes?

9

Thank you so much, I found the bug.
Please one last question. Can I have two Open Order one to take profit and ones or Stop loss on Coinbase?