order_id	int	Order Identifier from BaseLinker order manager
series_id	int	Series numbering identifier
vat_rate	string|int|float	(optional) VAT rate - parameter accepts values: - "DEFAULT": according to the numbering series (is set as default value) - "ITEM": use the rate assigned to the item of the order - "EXPT" / "ZW": exempt from VAT - "NP": annotation NP - "OO": VAT reverse charge - value: number from range 0-100

The method returns the data in JSON format.

status	varchar(30)	SUCCESS - request executed correctly ERROR - an error occurred during an API request. Error details will be described in 2 additional returned fields: error_message and error_code
invoice_id	int	ID of the added invoice.

Input data:
{ "order_id": 3754894, "series_id": 15 } Output data:
{ "status": "SUCCESS", "invoice_id": 20276565 } A sample request in PHP:
<?php $methodParams = '{ "order_id": 3754894, "series_id": 15 }'; $apiParams = [ "method" => "addInvoice", "parameters" => $methodParams ]; $curl = curl_init("https://api.baselinker.com/connector.php"); curl_setopt($curl, CURLOPT_POST, 1); curl_setopt($curl, CURLOPT_HTTPHEADER, ["X-BLToken: xxx"]); curl_setopt($curl, CURLOPT_POSTFIELDS, http_build_query($apiParams)); $response = curl_exec($curl);