When an appeal is rejected due to lack of locus standi, the party should first carefully review the judgment to understand the specific reasons for rejection, as locus standi relates to the party’s legal right or interest in the matter. The next step is to evaluate whether a procedural or substantive error occurred in determining their standing. If so, the party may file a review petition before the same court or approach a higher appellate forum challenging the finding on locus standi. Seeking legal advice from experienced appellate lawyers is essential to identify valid grounds and prepare a robust representation. Additionally, the party can explore alternative remedies, such as filing a fresh petition through a qualified person or entity that holds proper standing, ensuring all documentary and factual bases for the right to sue are clearly established in the new filing.