Delete parts created by Sales Catalogue Integration

Content (please ensure you mask any confidential information):

I have the following questions.

①Products>Parts

②Search for Part by Part Number
→Enter Part Number:
　→Press Search

③Check Select
→Press Delete

By following the above steps, you can delete parts that you created manually.

However, for parts created with Sales Catalogue Integration, step 3 cannot be performed and they cannot be deleted.
Is there a way to delete or disable parts created with Sales Catalogue Integration?