:original_name: en-us_topic_0000002119375338.html

.. _en-us_topic_0000002119375338:

Constraints and Limitations
===========================

Permissions
-----------

To use RFS, :ref:`create an agency <en-us_topic_0000001991890817>`.

Quotas
------

RFS limits the number of stacks for a single user, as shown in the following table.

+----------------+------------------------------------------------------------------------------------------------------------------------+--------------------------+
| Resource       | Item                                                                                                                   | Quota                    |
+================+========================================================================================================================+==========================+
| Template       | Maximum number of templates that can be created by a Open Telekom Cloud account                                        | 100                      |
+----------------+------------------------------------------------------------------------------------------------------------------------+--------------------------+
|                | Maximum length of a template name                                                                                      | 128 characters           |
+----------------+------------------------------------------------------------------------------------------------------------------------+--------------------------+
|                | Maximum length of a template file name                                                                                 | 255 bytes                |
+----------------+------------------------------------------------------------------------------------------------------------------------+--------------------------+
|                | Maximum length of a template URL                                                                                       | 2048 bytes               |
+----------------+------------------------------------------------------------------------------------------------------------------------+--------------------------+
|                | Maximum size of the file pointed to by the **template_uri** used in APIs for creating a template or a template version | 1 MB after decompression |
+----------------+------------------------------------------------------------------------------------------------------------------------+--------------------------+
|                | Maximum size of the file containing **template_body** used in APIs for creating a template or template version         | 50 KB                    |
+----------------+------------------------------------------------------------------------------------------------------------------------+--------------------------+
| Stack          | Maximum number of stacks that can be created by a Open Telekom Cloud account                                           | 100                      |
+----------------+------------------------------------------------------------------------------------------------------------------------+--------------------------+
|                | Timeout interval for creating a stack                                                                                  | 6 hours                  |
+----------------+------------------------------------------------------------------------------------------------------------------------+--------------------------+
|                | Maximum length of a stack name                                                                                         | 128 characters           |
+----------------+------------------------------------------------------------------------------------------------------------------------+--------------------------+
| Execution plan | Maximum length of an execution plan name                                                                               | 255 bytes                |
+----------------+------------------------------------------------------------------------------------------------------------------------+--------------------------+
|                | Maximum number of execution plans that can be created in each stack                                                    | 100                      |
+----------------+------------------------------------------------------------------------------------------------------------------------+--------------------------+