Automatic receipt generated for Dropship orders is showing user name on received by field

Automatic receipt is getting generated once the ASN is created. We can see the receipt number on dropship PO 'View Details'. When we open that receipt, there is a column named 'Received By' on that receipt and it is giving some username under that column. How does this 'Received by' field populates user name? Is there any configuration for defaulting 'received by' field?