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NOTE: Generating a full dump (fetchType = Full) is a time and resource consuming job and typically is run only the very first time to get all data from SCSB. To prevent unauthorized or unintentional initialization of a full export, SCSB allows configuring the value (external.datadump.fetchtype.full) that is used as the full data dump parameter in the API.
The resultant xml is generated as a MARCXML or SCSBXML, the schema is defined here.