Process configurator maximum allowable filter field UserFilter exceeds the maximum length allowed

Summary:

When creating a Revenue configurator to get the cost budget of specific Expenditure Items based on the revenue category associated to them I didn't find a source as Revenue Category for the Calculation Level Planned Raw Cost in Project Functional Currency , so we decided to make a list for the Expenditure Type one by one , but I got this error while validating

for field UserFilter exceeds the maximum length allowed.

how can I achieve this requirement or at least know the maximum allowable filtration length

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