Error message "Items of type Custom Reuse Library must not be edited in this tenant" is displayed when accessing app Custom Reusable Elements in Production System.
SAP S/4HANA Cloud
Key user extensibility needs to be created/edited in Quality Systems and then transported to Production.
Use Quality System to create/edit the Custom Reuse Elements and transport it to Production using Export Software Collection and Import Collection app.
For more information about transport management, check SAP Help Portal - How to Manage and Export Your Software Collection
Items of type Custom Reuse Library must not be edited in this tenant, Custom Reusable Elements , KBA , BC-SRV-APS-EXT-BL , Custom Business Logic , Problem
SAP S/4HANA Cloud all versions