# Delete Training From a Binary Category

You can use the `BinaryCatDeleteTraining` action to remove the existing training from a binary category. Using the `BinaryCatTrain` action on a binary category with existing training adds the new training to the existing training, unless you use the `BinaryCatDeleteTraining` action first. For details on this action, refer to the IDOL Server Reference. For example:

    http://12.3.4.56:9020/action=BinaryCatDeleteTraining&Name=spam_binarycat

This action uses port `9020` to instruct the IDOL Category component, which is located on a machine with the IP address `12.3.4.56`, to delete the training of the binary category named `spam_binarycat`.

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