2889792 - Error "Email [...] could not be sent" when sending to Customer

In the eDocument Cockpit, after triggering the "Send to Customer" action, the error message (EDOCUMENT037) "Email 'Billing Document **********' could not be sent" or "Email 'Accounting Document **********' could not be sent" is returned and the sending fails. You don't know why the e-mail sending is failing.

Image/data in this KBA is from SAP internal systems, sample data, or demo systems. Any resemblance to real data is purely coincidental.

eDocuments / Document Compliance, any country-solution

vendor; payer; customer; client; send to; sending; trigger; edoc_partner_connector; change_email; edoc_cockpit; eDocument Cockpit; Invoice; Incoming; Inbound; from; sender; recipients; mailto; mailfrom; EDOCUMENT; 037; EDOCUMENT037; , KBA , CA-GTF-CSC-EDO , Electronic Document Processing Framework , Problem