The File Adapter lets you read from or write to files on an on-premises system (e.g., local file server or shared folder) via a Connectivity Agent. There are two main operations:

• Read File (to process file contents, maybe transform them).
  
• Download File (just download the file, no transformation).
  

Each has different size limits, depending on whether a schema/structure is used.

For Read File operations:

• 1 GB when used without a schema
  
• 50 MB when using a schema for transformation
  
• 50 MB for a read operation with structured payload
  

Polling with a connectivity agent:

• 50 MB
  

Download File operations:

• 1 GB