Few weeks ago: Please write the system design docs for feature X of the new project Y. We need it in two weeks.
Few days later: Stop working on the docs, the customer hasn't yet bought that feature.
Few days later: We found that we included that feature in the main contract already. We need the docs in two days.
Today (docs delivered a month ago): There was a misinterpretation of the requirements and the contract, the customer hasn't bought the feature with the main contract, it has to be sold additionally. You didn't do anything 'til now, did you?

It would be really nice, if sales could finally decide what the customer bought and then tell me about the requirements that are already covered in the docs anyway. But I fear it could end in asking the customer 🤪🔫