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LOP_ERP_ARCHIVE_GET_TABLE - Read class data for given table
LOP_ERP_ARCHIVE_OBJECT - Archive class data
LOP_ERP_ARCHIVE_PUT_TABLE - Only for conversion: write class data
LOP_ERP_CHECK_VALID_ACCESS - Check that the archive is called in the right way
LOP_ERP_READ_OBJECT - Read class data for one object key
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