// Module included in the following assemblies:
//
// * support/rosa-troubleshooting-deployments.adoc
:_mod-docs-content-type: PROCEDURE
[id="rosa-troubleshooting-invalidinstallconfigsubnet-failure-deployment_{context}"]
= Troubleshooting cluster creation with an InvalidInstallConfigSubnet error

[role="_abstract"]
If a cluster creation action fails, you might receive the following error messages.

The following example shows the install logs output:

[source,terminal]
----
platform.aws.subnets[1]: Invalid value: "subnet-0babad72exxxxxxxx": subnet CIDR range start 10.69.1x.3x is outside of the specified machine networks
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The following example shows the {cluster-manager} output:

[source,terminal]
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Provisioning Error Code:    OCM3020
Provisioning Error Message: Subnet CIDR ranges are outside of specified machine CIDR.
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These errors indicate that a subnet CIDR range start is outside of the specified machine networks.

.Procedure

. Check your subnet configuration.
. Edit your machine CIDR range to include all subnet CIDR ranges. Generally, your machine CIDR should match your VPC CIDR.
+
For more information about CIDR ranges, see _CIDR range definitions_ in the _Additional resources_ section .

