Declension table of ?ṛtāyitavya

Neuter	Singular	Dual	Plural
Nominative	ṛtāyitavyam	ṛtāyitavye	ṛtāyitavyāni
Vocative	ṛtāyitavya	ṛtāyitavye	ṛtāyitavyāni
Accusative	ṛtāyitavyam	ṛtāyitavye	ṛtāyitavyāni
Instrumental	ṛtāyitavyena	ṛtāyitavyābhyām	ṛtāyitavyaiḥ
Dative	ṛtāyitavyāya	ṛtāyitavyābhyām	ṛtāyitavyebhyaḥ
Ablative	ṛtāyitavyāt	ṛtāyitavyābhyām	ṛtāyitavyebhyaḥ
Genitive	ṛtāyitavyasya	ṛtāyitavyayoḥ	ṛtāyitavyānām
Locative	ṛtāyitavye	ṛtāyitavyayoḥ	ṛtāyitavyeṣu

Compound ṛtāyitavya -

Adverb -ṛtāyitavyam -ṛtāyitavyāt