Incorrect metadata can result in lost royalties, delayed payments, or money going to wrong parties. Common issues: misspelled names, wrong splits, missing co-writers, incorrect publisher information. PRS and MCPS allow amendments through their online portal, but changes can take 3-6 months to process internationally. Historical corrections may be limited by society rules. Conflicts between writers require resolution before payments resume. Always verify registration confirmations carefully. Major errors might require publisher intervention or formal disputes. Prevention is crucial - double-check all data before submission. International societies may have different data, requiring separate corrections.