Regarding the Tick History ValidationOptions, "AllowOpenAccessInstruments" and "AllowHistoricalInstruments" option, what is the default value?
Hello @aya.nakamura ,
Thanks for reaching out and I think this is an excellent question.
If you are using scheduled approach, that emulates DSS GUI behavior, the validation options included should be according to your DSS GUI Preferences:
If you are using the on-demand approach and require specific ValidationOptions, the recommended approach is to explicitly include the ValidationOptions that are required with the request. Please see examples in Tick History REST API User Guide.
Hope that this answer is of help