What are the grounds of appeal under section 151 of CPC?

Suit OS 41/2022, were dismissed during April 2023 under Order 7 Rule 11(a) & (d) R/w Sec 151 of CPC. Now same plaintiff after 4 months, filed the regular appeal – RA 87/2023 under section 96 read with 41 of CPC with following ground, 1. Trial court has considered the respondent application file under order 7 rule 11 (a) and (d) 2. Whether this case is maintainable? 3. On what ground respondents need to contest. 4. Is Appeal option is possible against the rejection of plaint under Order 7 Rule 11(a) & (d) R/w Sec 151 of CPC