Caution when using onFormSubmit triggers to avoid mass simultaneous executions when un/linking a Response Sheet.
The following post is a caution around onFormSubmit triggers after I recently discovered a way that somebody had inadvertently managed to execute my code simultaneously over 253 times. Now unless a Google Form is submitted by 253 individuals all at the same time … then this is baffling.
When should an onFormSubmit trigger run?
At the point when a Google Form has been completed and the ‘Submit’ button pressed.
How else can the trigger be activated?
Well … it turns out when you unlink and then link back a Google Response Sheet containing the onFormSubmit trigger, it will activate it for every single Form response collected up to that point in time …
I use Google Apps Script to support staff and students in my job. I enjoy dabbling with creating tools to help with automation and I freely share my learning experiences on my blog, where I also have a number of useful Google Add-ons: www.pbainbridge.co.uk
