Can I add more scripts in Additional Scripts Section in Checkout Settings?

[akbikes]

First of all I want to know how many scripts can I add to additional script under checkout settings?
If yes, how do I add multiple different scripts?

For example: I added a POS device script in the additional script section along with the Google Tag Manager script for conversion tracking. The POS device wouldn't work properly. When I removed the Google Tag Manager code then it would work. I want to know how do I add them both so that they can work simultaneously. 
P.S. POS script is for POS device. GTM script is for conversion

[Huptech-Web]

Hello @akbikes , You can create up to 200 Shopify Scripts. Please review the link below:

https://help.shopify.com/en/manual/checkout-settings/script-editor/limitations 

If your scripts don't work there might be some other issue with the scripts.