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Note

Try to avoid setting this limit excessively high, as it may create problems with Salesforce limits. For greater file storage capability a third party file service may be a better option. Hook into form submission responses with event handlers to relate external items to visitors.

Salesforce limits allow a maximum of 6 million characters per string. As files are encoded into the REST request, this limits the total size of each request to approximately 4.3MB.

Complex requirements

Files may also be handled by directly mapping to the Content Version object. The :_fname, :_ftype and :_fdata properties may be mapped directly to the appropriate fields. The latter is automatically decoded to a Blob type which is suitable for the Version Data field.

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