SAP Quality Management
Quality inspection can be carried out with reference to task list or material characteristics. This is determined by inspection type setup and defaults in the material master. In some cases Inspection with task list may be missing in the material master if the configuration is not completed.
Material type should be linked to Tasklist type in configuration for this option to be visible.
Refer to link below for more details.
https://www.erprealm.com/blog/material-type-xxxx-is-not-defined-for-task-list-ty/