Did you know about ServiceNow ‘Fix Script’, a method of running server-side code after an application is installed or upgraded?

Fix Scripts provide some obvious benefits when compared with a Background Script — copying some examples below, taken from a well-written community article (links at the bottom)

• Provides the power of the full editor (note that you have line numbers, syntax checking, formatting, etc.)
• Includes versioning
• Can be added to Update Sets
• Includes auditing at the table/field level out of the box
• Offers the option to turn on the deleted records audit
• Easy to make a minor change and retry the script
• Easy to save scripts
• Allows you to export the script to XML
• Allows you to push long-running scripts to the background and then monitor via Progress Workers

https://community.servicenow.com/community?id=community%5Fblog&sys%5Fid=e81eae2ddbd0dbc01dcaf3231f96194f