0% Commission on a 100% Commission Job

[Coos64]

My question involves employment and labor law for the state of: California
I am in outside sales in California. Recently my company reassigned certain brands that I sell as 0% commissionable, claiming that I can always sell other commissioned brands to the accounts that have only been buying the now 0% commissioned items. These brands do take some of my time, and most accounts do buy other commissionable brands. Is this legal, to reduce me to 0% commission on some brands, when I'm paid 100% commission?

[Mr. Knowitall]

Are you, on the whole, being paid more than minimum wage for your hours worked?

[Coos64]

yes, overall I am paid more than the minimum wage.