You can try creating a custom deserializer.

@JsonDeserialize(using = CaseInsensitiveLocalTimeDeserializer.class)
@JsonProperty(value = "starttime")
private LocalTime startTime;

@JsonDeserialize(using = CaseInsensitiveLocalTimeDeserializer.class)
@JsonProperty(value = "endtime")
private LocalTime endTime;

with :

public class CaseInsensitiveLocalTimeDeserializer extends JsonDeserializer<LocalTime> {

    private final DateTimeFormatter formatter;

    public CaseInsensitiveLocalTimeDeserializer() {
        this.formatter = DateTimeFormatter.ofPattern("h:mma").withLocale(Locale.ENGLISH);
    }

    @Override
    public LocalTime deserialize(JsonParser p, DeserializationContext ctxt) throws IOException {
        String timeStr = p.getText().toUpperCase();  // Convert to upper case to handle AM/PM consistently
        try {
            return LocalTime.parse(timeStr, formatter);
        } catch (DateTimeParseException e) {
            throw new InvalidFormatException(p, "Failed to parse time", timeStr, LocalTime.class);
        }
    }
}

And the mapper would look like this when adding the deserializer.

public static ObjectMapper getObjectMapper() {
    ObjectMapper objectMapper = new ObjectMapper();
    JavaTimeModule javaTimeModule = new JavaTimeModule();
    javaTimeModule.addDeserializer(LocalTime.class, new CaseInsensitiveLocalTimeDeserializer());
    objectMapper.registerModule(javaTimeModule);
    // Other configurations...
    return objectMapper;
}

I have implemented custom serializer and de-serializer. Now issue is solved. But couldn't understand why for ports list, this de-serialization fails. Closing the discussion for now. Thanks.

Change your @JsonFormat line to this.

@JsonFormat(pattern="yyyy-MM-dd'T'HH:mm:ss")

The format pattern you have right now expects the sting to have millisecond values - but your example string doesn't have them.