A) Go to Configuration under the menu WhatsApp >> Template >> Transition

Note: All Transaction Vouchers available here

B) First tick Send box
C) Choose a Template
D) Body area type your message constant
E) Tick Send Attachment box and choose Default Invoice Format

Note: Ask for sending and Pick Mobile No. From Billing Details according to your business

F) Exit the collection engine and Go to Busy modify vch for testing 

G) Press Alt + W

H) Window prepared to click on the Yes button 

I) Now send the message successfully 

J) Send an invoice with the image check configuration below the image

K) If you send again message invoice with the media send successfully

As the above configuration mentioned as it is work with all these vouchers 

A) Go to Configuration under the menu WhatsApp >> Template >> Display 

Note: All Display reports available here

B) First tick Send box
C) Choose a Template
D) Tick the Send Attachment box

Note: Send to Salesman and Send Invoice with Ledger according to your requirements

E) Open any Ledger for configuration testing 

F) Press Alt + W
G) Window prepared to click on the Yes button 

Send Successfully 

As the above configuration mentioned as it is work with all these vouchers