Where can I find the article or batch number on the product?

To ensure a quick reply to your complaint, please indicate as much information as possible with regards to the concerned product or products. 

How does the article number look like and where can I find it? 
The article number is a 5-digits sequence after the designation Art., Art.-Nr. or Art.-No. and can be found mostly in the  area of the barcode. 

How does the batch number look like and where can I find it? 
The batch number is a 8-digits sequence and if necessary with two additional letters (Example: 63450108 CZ). It can be found on various positions: