This little gem showed up in my inbox this morning: 24-hour Test Window for HMAC-SHA1 Deprecation for Integrations Using Token-based Authentication (TBA) The upcoming 24-hour test window will enable you to see the effects on your account of deprecation of the HMAC-SHA1 signature method for TBA. During the test window, the HMAC-SHA1 signature method will be disabled and integrations using it will stop working. The 24-hour test window will begin on Tuesday, June 22, 2021 at 12:00 a.m. PDT. ----- So on the second day of Amazon Prime Day (We're eCommerce) their strategy is to flip the switch and and let us see what happens for 24 hours. I know I have one partner still on SHA1, but fortunately the others that have replied to me are already on SHA256. Just a heads up to check with your partners. RANT: NetSuite is going to turn off a critical function to see what happens with only 6 days notice? On something that we can't control at our end? This seems... <edited for TV> foolish. If any of our EDI or other order/inventory management/shipping/etc. partners aren't compliant on something that isn't live yet, we would be effectively shut down for the day. /sigh