When you use Tablestore, you must comply with the naming conventions of instances, tables, and columns.
Names of tables and columns
Conventions:
The name can contain only letters, digits, and underscores (_).
The name is case-sensitive.
The name cannot start with a digit.
The name must be 1 to 255 characters in length.
Instance name
The name of an instance must be unique within a region. The name can be the same across different regions.
Conventions:
The name can contain only letters, digits, and hyphens (-).
The name is case-insensitive.
The name must start with a letter and cannot end with a hyphen (-).
The name must be 3 to 16 characters in length.