Materials uploading in equipment BOM

Hello to all,

I want to upload the newly created spare parts materials in the equipment BOMs in mass.Already there were materials existed in BOMs.

But deletion flag has been set by the client for these materials and new material codes has created by them. But they don,t know, how to upload these materials. There are such 10000 materials to be uploaded.

Please guide.

Thank you,

Regards,

Jeevan