Causes for a license activation failure on a CE series switch

The causes for a license activation failure on a CE series switch include:
1. The product type or device ESN does not match the license file. In this case, apply for a new license that matches the product type or device ESN.
2. The license revoke command has been executed to revoke the license file. Run the display display license revoke-ticket command, and a character string is displayed, indicating the revocation code. Use the revocation code and other required information to apply for a new license.

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