Yeah, Ray,IN is correct.
I'd also suggest that you consider getting a roll or two of 4" Eternabond tape and one of these days, clean the roof, then apply the tape OVER any caulking. After smoothing the caulking cleaning it up, maybe trimming the edges, so the tape has full coverage and still grips the edges of what you're covering. Doesn't matter if it's a TPO or Filon roof. Needs either tape and forget it or constant maintenance.
You can see a bunch of pictures of this at my ad free blog here:
Roof and roof items... and here:
Roof issues...
Here's an example: