No, it is not mandatory to put each letter in caps, letters can be used in mixed case as well.
A Promo code can be entered is all caps as well as mixed case in order for it to work. it will be valid as long as the correct letters and numbers are present regardless of case.
It is not possible to make a Promo code case sensitive in order for it to work, it will be valid as long as the correct letters and numbers are present regardless of case.
In an effort to supply information as quickly as possible, this article has been published prior to a formal technical review, and is subject to factual, grammatical, and various structural errors. Data may be incomplete, misordered, or incorrect.
This additional disclaimer will be removed upon formal review of this article. The standard Punchh Inc. KB Disclaimer still applies, and can be found at: https://support.punchh.com/hc/en-us/articles/360040100273-Punchh-Inc-Knowledge-Base-Disclaimer
If further assistance is required, submit a ticket to Punchh Support. (For help submitting a ticket, click here)