1.19.2 How to estimate the number of characters in a query parameter
You can specify a maximum of 1,024 characters for the query parameter of a direct access URL. Use the following formula to verify the number of characters that are specified for a query parameter:
(number-of-characters-for-resource-group-name + number-of-characters-for-service-name + number-of-characters-for-task-name + number-of-characters-for-task-description) + 16 + (number-of-characters-for-property-key + number-of-characters-for-property-value + 5) x n# ≤ 1,024
#: n is the number of properties to be specified.