Why do I receive the "maximum number of throughput mode changes or provisioned throughput value decreases" error when I modify the throughput mode on my EFS file system?

Resolution

For EFS file systems that are in Provisioned throughput mode, you can increase the provisioned throughput value of the file system at any time with no restriction.

However, Amazon EFS restricts the following modifications to one change within a 24-hour period:

• A change to a file system's throughput mode. For example, you change your throughput mode from Provisioned throughput to Bursting or Elastic throughput twice in a 24-hour period.
• A reduction in the amount of provisioned throughput in Provisioned throughput mode.

If you try to change the preceding options more than once in a 24-hour period, then you receive the following error: "You have reached the maximum number of throughput mode changes or provisioned throughput value decreases. Wait until YYYY-MM-DDTxx:xx:xxZ UTC and try again."

Before you modify your EFS file system's throughput mode, wait until the time that's indicated in the error message.