SAP Knowledge Base Article - Public

2660904 - S/4HC - Error: Sender domain in isn't allowed


An email output is set up, however, it fails with message "Error: Sender domain in isn't allowed".


S/4 HANA Cloud

Reproducing the Issue

  1. Create a purchase order with an email output.
  2. The email output isn't sent out, it fails with message "Error: Sender domain in isn't allowed".


The domain in the sender email address isn't maintained as an allowed sender domain.


  1. Please open "configure your solution" in app "manage your solution", and input search text "domain".
  2. Open the selected SSCUI of Output Management, and then open the configuration step "Define Email Sender Domain".
  3. Input the correct domain name of the sender email address in the configuration.
  4. As an example, domain name '' will allow any email address of this domain like ''. But it will also allow email addresses from subdomains of '' like ''.

P.S: In case email address from error message is '': on SAP S/4HANA Cloud 2108 checks were introduced preventing the usage of SAP domains ( or in the configuration step 'Define Email Sender Domain' of Output Parameter Determination.


sender domain, domain, OM: Sender Domains, output, SSCUI, output management, SSCUI 101311, 101311, 101313, Default Sender Address , KBA , CA-GTF-OC , SAP S/4HANA output management , Problem


SAP S/4HANA Cloud all versions