A Study to Evaluate the Safety, Tolerability, and Efficacy of Escalating Doses of BMS-986463 in Participants With Select Advanced Malignant Tumors.

Inclusion Criteria * Participants must have an Eastern Cooperative Oncology Group Performance Status of 0 or 1. * Participants must have at least 1 lesion accessible for biopsy in addition to the target lesion, from which a fresh pre treatment biopsy must be obtained. * Participants must have an unresectable/metastatic carcinoma. Exclusion Criteria * Participants must not have Leptomeningeal metastases. * Participants must not have concurrent malignancy (present during screening) requiring treatment or history of prior malignancy active within 2 years prior to treatment. * Participants must not have had any prior radiation therapy within 2 weeks prior to start of study treatment. * Other protocol-defined Inclusion/Exclusion criteria apply.