Licensing Question - CA TPX 5.2 to 5.4

Document ID : KB000072852
Last Modified Date : 09/03/2018
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I'm upgrading my TPX software from version 5.2 to version 5.4. I was wondering if I needed to update the licensing information prior to the TPX 5.4 upgrade. 
The LMPKEY does not depend on the version of the product. It depends on the CPU. You will use the same LMPKEY if you do not change the CPU or serial number.