The Action field shall express the action that the OTA Provider requests from the OTA Requestor. See Section 11.20.3.6, “Applying a software update” for a description of the Action values provided in response to an OTA Provider receiving an invocation of this command.
The minimum time period the OTA Requestor shall wait before executing the Action, in seconds from receipt.
If this field has a value higher than 86400 seconds (24 hours), then the OTA Requestor may assume a value of 86400, in order to reduce undue Software Image application delays.
See
MatterSpecification.v13.Core § 11.20.6.5.4