Asset and equipment at the same time, version 2017

Hi,

I am trying to define an EAM asset as an equipement to use it as a resource. I have applied the recommendation of the discussion "Asset and equipment at the same time",

but i am probably missing one small detail :

- I am using Oracle EBS version 12.1.3.

- i have checked the master item physical attributes "equipment" for the asset group VEHTESTRESS.003 (see snapshot below)

- i am defining a new asset with the asset group VEHTESTRESS.003. when i try to save it, i have the error "this is a read only flexfield. you cannot change any values in the flexfield" (see snapshot below)