Is there a limit on the number of a!gridRowLayouts that can be included within a

That error shows that in line 496 of your formLayout your code is trying to index item 9 in a list that only has 8 items (from index 1 to 7) so is not precisely a limit you're hitting but a problem in your logic.

I had a typo in my comment, I meant:

That error shows that in line 496 of your formLayout your code is trying to get item at index 8 in a list that only has indexes 1 to 7 so is not precisely a limit you're hitting but a problem in your logic.

You need to check your rule around that line to find what lists/arrays you may be indexing and verify why it has only 7 items and you're trying to get index 8

Eduardo, the behavior of the interface is odd as the rows displayed in the grid did not match the index sequence (i.e. local item at index 3 was sometimes showing index 7 fields). Once I cleared my cache (actually restarted my pc), the indexes worked properly for the grid SAIL that was previously not working. Any suggestions for clearing saved values in the interface other than delete all\\save and tools\\delete history?

Hi Mike,
Yes you are correct, interface do behave in the above way you mentioned.
The simple workaround which worked for me is simply copying your SAIL code, closing the intetface tab, opening it again and pasting your code again.