Hide action after execution?

[MC2]

I have created an action that copies information from a row into another table. I want this action to be hidden once it has been executed to prevent it from overwriting the row after the fact. Is there a way to do this by setting a condition that checks if the other table has the same information? 

[lynchk21]

In the action's behavior settings you can add the following formula (with modifications) to the Only if this condition is true field:

NOT(IN([UniqueValue],OtherTable[UniqueValue]))

Here the [UniqueValue] is a column that is unique to the specific row. It also needs to be a value that is being copied to the second table. You might have one, such as your key column, or you might need to create one.