How to Generate Flexfield Database Items?

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Hello everyone,

We are trying to generate the database items from the predefined flexfield (PER_CONTRACT_LEG_DDF). The reason why we want to retrieve the items is because even though the flexfield cannot be edited/accessed by us since the pencil icon (edit) is grayed out, we want to create a fast formula that requires some information inside this flexfield.

I am not sure if "Generate Flexfield Database Items" is applicable in our case, but we couldn't think of any other way to retrieve the items inside the ff; however, we cannot seem to run the process and we seem to experience many issues from the beginning.