Hello,

By example, for the products, when you select many of them and then when you try to delete the all selected list, in some cases you can get an error like :

Integrity Error

The operation cannot be completed, probably due to the following:
- deletion: you may be trying to delete a record while other records still reference it
- creation/update: a mandatory field is not correctly set
object with reference: Lines of Point of Sale - pos.order.line 

UNFORTUNATELY odoo don't delete the datas who are NOT concerned by this error while blocking all the operation.

I know that is it possible to search and 

to create some searches bases on informations contained in the standard fields.

But how is it possible to create a search or filter that use this kinf of specific information like when a product (or other information) is or is not used like for POS or in an invoice, etc (pos.order.line , procurement.order, ...)

Regards