u/adev23221

Is the ! operator supported as a condition in fcm?

Have started to get

400 - INVALID_ARGUMENT, "Request contains an invalid argument."
responses from FCM on requests that used to work . They all have in common that they use the ! operator as a condition.

Like

"condition": "'a' in topics && !('b' in topics)",

Anyone else noticed a change?

reddit.com
u/adev23221 — 6 days ago