Key legal question
Whether the additional agreement removed the contractual right to terminate immediately for failure to reach the minimum turnover.
Extracted holding
The additional agreement supplemented the existing clause; it did not replace or waive the right to terminate under the original contract.
Extracted reasoning
The later agreement fixed the minimum turnover and added a purchase obligation for the shortfall, which under the trust principle confirmed the importance of the turnover target rather than abolishing the termination clause.