I come across 2 issues with respect to Change Material option.
1) PFB the image, in "Change Material" how to populate all material available in ECC?
It throws error "Enterprise search Connector for object type material is not available"
but see I have defined that for material BO Type "194".
The second issue is
2) Using "Change material" after I do changes for a material, in the activation step I get the below error.
I get this error for all material types.
PFB my number range for all materials.