not able to be accessed or not present

उपलब्ध नहीं है

English Usage: The service was unavailable due to maintenance work.

Hindi Usage: सेवा मरम्मत कार्य के कारण उपलब्ध नहीं थी।

a state of not being available

अनुपलब्धता

English Usage: The unavailability of the product caused frustration among customers.

Hindi Usage: उत्पाद की अनुपल्ब्धता ने ग्राहकों में निराशा पैदा की।