When a civil suit is filed in a court lacking the required pecuniary jurisdiction, the proceedings are considered invalid as the court has no authority to entertain matters beyond its monetary limits under Section 6 of the Code of Civil Procedure, 1908. Upon discovering this error, the litigant should immediately request the return of the plaint under Order VII Rule 10 CPC and refile it in the appropriate court having the proper pecuniary jurisdiction. The time spent in the wrong court may be excluded from the limitation period under Section 14 of the Limitation Act, 1963, if the filing was done in good faith. Prompt corrective action ensures that the case proceeds lawfully and without undue procedural complications.