ForAnyValue:StringEqualsIfExists

compares a list of strings in a request to a list of strings in your policy. The comparison is case sensitive.

To match a request, the context key must exist in the request and at least one string in the request must match one of the strings in your policy.

You can use policy variables in the value of this operator.

Warning

ForAnyValue:StringEqualsIfExists is actively confusing. Any operator starting with ForAnyValue ignores IfExists — it is not evaluated against the entire array, only against a single value at a time inside the ForAnyValue loop. Use ForAnyValue:StringEquals instead so your coworkers don't hate you.

ForAnyValue:StringEqualsIfExists in an Allow Statement

Simulate in IAM Simulate

Policy Condition	Request Context	Result
"ForAnyValue:StringEqualsIfExists": { "aws:TagKeys": [ "DataClass", "Owner" ] }	`aws:TagKeys: null`	− Not Allowed Statement does not apply
"ForAnyValue:StringEqualsIfExists": { "aws:TagKeys": [ "DataClass", "Owner" ] }	`aws:TagKeys: - Dept - SIC`	− Not Allowed Statement does not apply
"ForAnyValue:StringEqualsIfExists": { "aws:TagKeys": [ "DataClass", "Owner" ] }	`aws:TagKeys: - DataClass - Dept`	✓ Allowed Assuming no explicit Deny elsewhere
"ForAnyValue:StringEqualsIfExists": { "aws:TagKeys": [ "DataClass", "Owner" ] }	`aws:TagKeys: - DataClass - Owner`	✓ Allowed Assuming no explicit Deny elsewhere
"ForAnyValue:StringEqualsIfExists": { "aws:TagKeys": [ "DataClass", "Owner" ] }	`aws:TagKeys: - DataClass - Owner - Dept`	✓ Allowed Assuming no explicit Deny elsewhere

ForAnyValue:StringEqualsIfExists in a Deny Statement

Simulate in IAM Simulate

Policy Condition	Request Context	Result
"ForAnyValue:StringEqualsIfExists": { "aws:TagKeys": [ "DataClass", "Owner" ] }	`aws:TagKeys: null`	− Not Denied May be allowed by another statement
"ForAnyValue:StringEqualsIfExists": { "aws:TagKeys": [ "DataClass", "Owner" ] }	`aws:TagKeys: - Dept - SIC`	− Not Denied May be allowed by another statement
"ForAnyValue:StringEqualsIfExists": { "aws:TagKeys": [ "DataClass", "Owner" ] }	`aws:TagKeys: - DataClass - Dept`	✕ Denied
"ForAnyValue:StringEqualsIfExists": { "aws:TagKeys": [ "DataClass", "Owner" ] }	`aws:TagKeys: - DataClass - Owner`	✕ Denied
"ForAnyValue:StringEqualsIfExists": { "aws:TagKeys": [ "DataClass", "Owner" ] }	`aws:TagKeys: - DataClass - Owner - Dept`	✕ Denied

ForAnyValue:StringEqualsIfExists

ForAnyValue:StringEqualsIfExists in an Allow Statement

ForAnyValue:StringEqualsIfExists in a Deny Statement

See Act in your environment