A DLA decision is a legal ruling made by the Disability Living Allowance (DLA) tribunal. If you disagree with the decision, you can appeal it to the Social Security and Child Support Tribunal (SSCS).
To appeal a DLA decision, you must first request a reconsideration. This means asking the DWP to review the decision and make a new one. If you are still not happy with the decision, you can then appeal to the SSCS.