This articles helps with the steps to re-activate or re-enable License Activation in JAL portal.

There can be situation where you mistyped or entered wrong UUID. In such situation, the generated license will not work in PAA.

If the activation of a license failed for some reason, for example because you mistyped the UUID, you can click the Revoke button in the My Product Licenses view (under My Activations) to revoke the license.

You then need to start over with the  ncc license license-request command as described above.

Follow steps as per the document: https://www.juniper.net/documentation/us/en/software/active-assurance4.2/paa-install/topics/concept/getting-started.html  : Activate Licenses

Note: It is vital that you enter the UUID exactly as received from Juniper, using the standard UUID format in lowercase with hyphens: for example, 0a1b2c3d-4e5f-6789-a0b1-c2d3e4f5678.