The maximum number of parameters that can be created is specified in the contract. If you need more parameters, please contact your consultant or firstname.lastname@example.org.
Basically, a limit is assigned across all parameter types (session parameters, page parameters...) and you can then decide how many parameters you want to create and of what type. Campaign parameters are an exception. These are provided with a separate limit.
Campaign parameters differ from other parameters in that they are part of the customer journey. Some key figures are calculated using this customer journey, which makes the processing of campaign parameters more complex and resource-intensive.
You can find out more about campaign analyses in the training chapter.