Error 477 Buffer is too small

Hello, We have Informix (IBM Informix Dynamic Server Version 9.40.UC4)running on Solaris (SunOS sarabande 5.8 Generic_117350-33 sun4u sparc SUNW,Ultra-4). I am doing an update to the time series datablade like this: UPDATE mytable SET data_series=BulkLoad(data_series,data_file,64) WHERE time_series_result_code = 100; I see this error: -477 Buffer is too small. In a GET DESCRIPTOR statement, the buffer (the character host variable) that is specified to store the NAME entry is too small. Increase the buffer size, and call the GET DESCRIPTOR statement again. This error message also is displayed when the host variable is a FILE type, and the buffer used to store its name is too small. Does this mean that my loads were truncated? It looks like at least some of the data went in, but this program runs as a cron job and I don't know exactly which input files/rows it failed on. Does it mean the insert itself failed just for a given row of data? Thanks! Kris