Custom properties, Component Alerts & HTML

We've had this in our environment - mostly when I copy & duplicate an alert.

The only solution I've found is to delete and re-add the variables and re-save. 

stuartdc When the alert variable is formatted incorrectly or the wrong type, it will display the variable code itself - shown in your example. Sometimes, it does when it fails to retrieve the values - check your db performance if you suspect this.

You are on the right track to delete and re-create. One thing I have noticed is that the original post mentions component and application alerts. The alert variables will be formatted differently slightly for each alert type. See example below of node caption/custom property for an application alert and a component alert. 

Application alert - Node Caption and custom property
${N=SwisEntity;M=Node.Caption}
${N=SwisEntity;M=Node.CustomProperties.propertyName}

Component Alert - Node Caption and custom property
${N=SwisEntity;M=Application.Node.Caption}
${N=SwisEntity;M=Application.Node.CustomProperties.propertyName}

If you are familiar with swql, some of the formatting makes sense. I have noticed that the formatting seems to be enforced starting sometime around npm12. 

So when I copy an alert and assign or reuse the alert actions, I try to simulate to make sure I did not copy incorrectly formatted variables.