Hi Zoho Team,

How do I update/delete the line items/Product details of an invoice. I'm using this sdk below:
https://help.zoho.com/portal/kb/zoho-crm/developer-guide/server-side-sdks/php-sdk

I'm only able to create an invoice and add line item to it, once I save it the line item is also saved, this is working correctly. But the problem is when I want to update/delete the added line item of an invoice, I cant find a way to do it in the documentation of the php API sdk. I tried to dig in the sdk itself and the available method I found to delete the line item is not working. I can only update the invoice but seems like there's no way to delete or update the line item/product details of an invoice. 

Zoho team this is very crucial API usage scenario so please consider doing an immediate action for this. I tried to search in this forums and in the interenet on how to do it and only I can find is unanswered thread  for a couple of years or answers that dont make sense. This is very basic but mostly used scenario, to update/delete the line item of an invoice so please help us.

Thank you in advance.

Cheers!