Explanation: Cornu (Vocabulaire juridique) distinguishes between a délai d'attente and a délai de grâce - the latter implies an extension granted by a court, whereas the former is simply a "délai avant l'expiration duquel un acte ... ne peut être valablement utilement accompli." Cp. Black's definition of "grace period" as "a period of extra time allowed for taking some action without incurring the usual penalty for being late.
Based on replies by other colleagues to your related queries, I assume the context is penalties for a service provider in the event of unplanned system downtimes .
I think your 'period of grace' is probably closer in the context
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waiting period
Explanation: Cornu (Vocabulaire juridique) distinguishes between a délai d'attente and a délai de grâce - the latter implies an extension granted by a court, whereas the former is simply a "délai avant l'expiration duquel un acte ... ne peut être valablement utilement accompli." Cp. Black's definition of "grace period" as "a period of extra time allowed for taking some action without incurring the usual penalty for being late.
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peer agreement (net): +8