2692328 - Error when sending email "Recipient Address x.y@abc.com not allowed"

When sending an email, the following error occurs:

• Recipient Address x.y@abc.com not allowed

The output request for channel email cannot be triggered out successfully.
The output request can determine the 'To' email address from BRF+, but the status of this output request is 5 (failed), and the output management log shows the following:

• Start processing of output for user XY at 14/1209/2019 16:13:29 (UTC).
  Processing of output item (Application Object Type) with ID xxx.
  Processing of output item with technical ID (UUID) using channel EMAIL.
  A technical error occurred when sending the email.
  Recipient address x.y@abc.com not allowed

SAP S/4HANA Cloud Public Edition

Missing configuration in the receiver address pattern.

It is necessary to maintain the receiver address pattern.

1. Open the Manage Your Solution app.
2. Select Configure Your Solution.
3. As Application Area, select Application Platform and Infrastructure.
4. As Sub Application Area, select Output Management.
5. Select the System Administration item.
6. Choose Configure for the Define Email Receiver Adresses for Test Systems configuration step (configuration step ID 101312).
   
   Here it is possible define which domains are allowed to be receiver domains.
   Note that entries in receiver address pattern should start with '*', for example, '*@abc.com'.
   For more information, see the Setting Up Output Management (1LQ).

At runtime the recipient email address is determined by the output parameter determination (OPD). If there is no email address maintained in OPD, the email address will be filled with the default address that is defined by the using application.
The default email address configuration's place differs from application to application.

For payment advice documents, make sure that the receiver email address is maintained in the business partner vendor master data:

1. Open the Maintain Business Partner app from the Business Partner Master business group.
2. Select the relevant business partner and the corresponding supplier (Financial Accounting) role.
3. Choose Company Code on the ribbon and then choose the Vendor: Correspondence tab.
4. Enter the email address in the Correspondence section.

• Setting Up Output Management (1LQ)
• Configuring the Output of Payment Advice Documents 

E-mail, Email, emailing, Email Notification, Create Correspondence, cl_aps_om_send_address, _check_address, Payment Advice Document, QUEUE_PAYM_ADV; PAYM_ADV; FIN_FO_PAYM_ADVICE, APOC_OR_MESSAGES051 , KBA , CA-GTF-OC , SAP S/4HANA output management , FI-FIO-AR , Fiori UI for Accounts Receivable , BC-SRV-COM-OM , Output Management: Email Templates , Problem