invoice_id	int	BaseLinker invoice identifier
get_external	bool	false (by default) - download invoice file generated by BaseLinker true - download an invoice from an external accounting system (if provided there), or an invoice uploaded by API. If an additional invoice file does not exist, an invoice in BaseLinker format will be returned

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	text	Invoice file in binary format encoded in base64, at the very beginning of the invoice string a prefix "data:" is provided e.g. "data:4AAQSkSzkJRgABA[...]"
invoice_number	varchar(30)	BaseLinker invoice number (or external accounting system number if get_external is set to true)

Input data:
{ "invoice_id": 153845 } Output data:
{ "status": "SUCCESS", "invoice": "data:4AAQSkZJRgABA[...]", "invoice_number": "FV 101/03/2023" } A sample request in PHP:
<?php $methodParams = '{ "invoice_id": 153845 }'; $apiParams = [ "method" => "getInvoiceFile", "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);