Common mistakes that lead to “no locus standi” rejections include filing a case without a direct legal interest, relying on insufficient documentation, or presenting a petition motivated by personal or political gain rather than a legitimate grievance. Many rejections also occur due to vague pleadings that fail to establish how the petitioner’s rights are affected or by improper authorization when representing another person or entity. To deal with this effectively, one should first review the cause of action and gather clear evidence linking the petitioner to the dispute. Step by step, the petitioner should: (1) define the specific right or interest involved, (2) collect and attach all supporting documents, (3) draft precise and fact-based pleadings, and (4) seek legal review from an experienced lawyer before filing. Following these best practices ensures procedural accuracy and significantly reduces the risk of rejection due to lack of locus standi.