Identity Center - SSO login - "AWS accounts are inaccessible at this time"

Upon login into identity center provisioned by azure active directory, there is this message "AWS accounts are inaccessible at this time".

in the json error there is this json message. There is no documentation about trouble shooting this in saml.

https://docs.aws.amazon.com/singlesignon/latest/userguide/troubleshooting.html

{
    "awsAccessAttributes": {
        "project": "sale"
    },
    "awsFederationStatus": "NOT_READY",
    "awsFederationNotReadyReasonDetails": {
        "DOES_NOT_FIT_REGEX": [
            "entreprise.costCenter"
        ]
    },
    "externalAttributes": {
        "https://aws.amazon.com/SAML/Attributes/AccessControl:User.Title": [
            "admin"
        ],
        "https://aws.amazon.com/SAML/Attributes/AccessControl:entreprise.costCenter": [
            "prod;uat;dev"
        ],
        "https://aws.amazon.com/SAML/Attributes/AccessControl:entreprise.division": [
            "sale"
        ]
    },
    "identityStoreUserId": "xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx",
    "managedActiveDirectoryId": "xxxxxxxxxxxx"
}