API to create change request item

Hi,

In Product Information Management, we can create manually change request for item.

I want to create this change request by API or table interface.

When I search, I found just the API "ENG_ECO_PUB.Process_Eco" but this API is for creating engineering change order.

Can I use this API to create change request ? If yes, what attributes can be modify to create ECR and not ECO ?

Or is there an other API ?

Thanks for your help.

Julien.