Italian term
Italy
Dedicated Italian Linguist
Native in: Italian (Variant: Standard-Italy)
Works in: English to Italian, French to Italian, Italian, and 3 more.
rinuncia tolleranza inadempimento
"Una nostra eventuale tolleranza di fronte ad un Suo inadempimento non costituirà alcuna rinuncia a reagire di fronte ad un successivo inadempimento."
Ipotesi:
A waiver by us of any default will not constitute a waiver of any subsequent default.
An acceptance, if any, of lack of fulfilment by you, will not be deemed a waiver of any subsequent breach.
The waiver by us of any breach shall not be construed as a waiver of any subsequent breach.
Proposed translations
United States
Legal and academic specialist
Native in: English
Works in: Russian to English, Italian to English, English, and 1 more.
does not constitute a waiver of our right to respond to any subsequent breach
A one-time exemption from us in response to a breach on your part does not constitute a waiver of our right to respond to any subsequent breaches.
Credo che la parola importante da non dimenticare qui é "reagire".
Portuguese translations
Native in: Portuguese (Variants: Brazilian, Mozambican, Angolan, South African, European/Portugal, Cape Verdean) 
Works in: English to Portuguese, Italian to Portuguese, Portuguese to English, and 4 more.
The waiver by us of any breach shall not constitute a waiver of any subsequent breach
https://comfortproducts.com/ce-terms-of-purchase/
http://www.foremostgraphics.com/terms-conditions/
www.linguee.fr/anglais-francais/traduction/waiver of breach...
| Grazie leggo ora, prima mi appariva solo la nota e non la risposta. :) |
Malta
12 yrs. experience translating EU stuff
Native in: English (Variants: British, UK) , Maltese
Works in: English to Maltese, Italian to Maltese, French to Maltese, and 3 more.
any possible waiver, by us, of any breach on your part, shall not constitute a waiver of any
Seychelles
25 years experience constantly improving
Native in: English (Variant: British) 
Works in: Italian to English
failure ... to take action ... waiver of our right ... failure to perform
"Any failure on our part to take action on failure to perform on your part does not constitute any waiver of our right to take action on any subsequent failure to perform"
I think the moderator should have banned this because in reality it is not a term nor even three terms, but a whole long sentence.
\"Una nostra eventuale tolleranza di fronte ad un Suo inadempimento non costituirà alcuna rinuncia a reagire di fronte ad un successivo inadempimento.\"
Discussion
Also, the three-word question is not a full sentence, which implies that it's a heading. Could you confirm that, Francesca?