3339158 - Invalid namespace for Form Derivation Rule ID - SAP S/4HANA Cloud

You want to create a new entry in activity Define Rules for Determination of Master Form Template.

When creating a new entry with an ID starting with prefix YY1 or copying an existing entry with this prefix, you get the error message "Invalid namespace for Form Derivation Rule ID" (/FTI/WEBGUI_MSG031) when trying to save the new entry.

SAP S/4HANA Cloud

Output Control, Define Rules for Determination of Master Form Template, Form Derivation Rule ID, Namespace, YY1, /FTI/WEBGUI_MSG 031, SSCUI 10118 , KBA , CA-GTF-OC , SAP S/4HANA output management , How To