"The requested functionality is not available/allowed" error in FIneReader Engine 12


The following error message appears at the start of the processing:

The Requested functionality is not available


This message appears if your program uses functionality that is not supported by your license.


To resolve this issue, it is important to find out which method is causing the error. You can do this by using the debug mode or by checking the engine log file.

The issue can occur on multiple stages of the processing:

  1. On a Process method call:
    • You might be using the Barcode/OMR license. In this case, use the ExtractBarcodes() method of the FRPage object instead of the Process() method of the FRDocument object.
    • Make sure that the language you are using is supported in your license. This can be checked by opening the License Manager utility, selecting the relevant license and checking the Standard languages and Additional languages section.
  2. On the Export method of the FRDocument object execution. If that happens, please try to change the export format.

This error can also be resolved by adding the missing functionality to your license. To do so, please contact one of our sales managers.

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