How to issue Sales invoice

vikram kerekar (1241 Points)

15 November 2018  
We are wholesalers and retailers of all types of paints.
However, to a large client, we have not only sold paints but also agreed to paint their premises which was charged on square foot basis.
Now, are we to show separately in out invoice, paints sold and labour charged? Should we also separately mention HSN /SAC codes for labour on painting job?
The client has further asked us to issue only one invoice.