Datalayer ecommerce.value NOT VALID

Hello,

I have an issue testing my purchase process with Google Tag Manager.

When finishing the purchase process (ie : when payment is done), the datalayer ecommerce.value shows 0 instead of showing the total value of my purchase (in the case it should show 474)

However the datalayer ecommerce.tax is correctly configured (the value 79 is correct)

Can you please help fixing the datalayer update of information ?

Many thanks,

{
pagePostType: "page",
pagePostType2: "single-page",
pagePostAuthor: "Bluekat",
customerTotalOrders: 5,
customerTotalOrderValue: 474,
customerFirstName: "BLUEKAT",
customerLastName: "DIGITAL",
customerBillingFirstName: "S***",
customerBillingLastName: "d****",
customerBillingCompany: "B*****",
customerBillingAddress1: "2******",
customerBillingAddress2: "",
customerBillingCity: "C******",
customerBillingState: "",
customerBillingPostcode: 7****,
customerBillingCountry: "FR",
customerBillingEmail: "a******",
customerBillingEmailHash: "e****",
customerBillingPhone: ****,
customerShippingFirstName: "S****",
customerShippingLastName: "d****",
customerShippingCompany: "B****",
customerShippingAddress1: "2***",
customerShippingAddress2: "",
customerShippingCity: "C****",
customerShippingState: "",
customerShippingPostcode: 7****,
customerShippingCountry: "FR",
event: "gtm.load",
gtm: {uniqueEventId: 5, start: 1727091169881},
new_customer: false,
ecommerce: {
currency: "EUR",
transaction_id: "11578",
affiliation: "",
value: 0,
tax: 79,
shipping: 0,
coupon: "",
items: [
{
item_id: 8777,
item_name: "Kilim Afghan 241x179",
sku: "1483/1170",
price: 474,
stocklevel: 0,
stockstatus: "outofstock",
google_business_vertical: "retail",
item_category: "Tapis d'Orient",
item_category2: "Tapis Afghans",
item_category3: "Kilims Afghans",
id: 8777,
quantity: 1
}
]
}
}

The page I need help with: [log in to see the link]