- This is Microsoft.
- He returns Webhook success with a code 200 and plaintext 1.
- He returns Webhook failure with a code 200 and a string tells its endpoint returned error 400.
- the string didn’t tell what exactly the error.
- Don’t be like Microsoft.
EDIT: Got a few details wrong since this happens a few months ago and this meme used to be on r/ProgrammerHumor. Also the proof: 
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Just making a point that it always returns a 200 even when it errors.
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Yup I’m with you. Once the boilerplate is in place, smooth sailing from there. What OP is showing truly is the worst though lol.