Hello Julia,
In general, there are no internal limits, i.e. you can load as many files as admitted by the operating system.
However, you should take into account that in current releases there is unfortunately a bug in one of the new communication methods used by the Data Loader. Therefore you should try to load the documents with the ?server instead using the ?database parameter.
Best Regards,
Reiner
#API-Management#webMethods#Tamino