The file compression operation reads the compression source input file from the work folder or common folder, and then writes the compressed output file to the work folder or common folder.

The following figure shows an overview of processing of the file compression operation.

Figure 8-39 Processing of the file compression operation

The table below shows the file formats supported in the file compression operation. Note that compression of directories is not supported. If a directory is specified as the input file, an error message (KDEC80035-E) is output and the file compression operation is canceled.

Table 8-21 File formats supported in the file compression operation

File format	Input file	Output file
ZIP format#	Y	Y
Other than the above	Y	N

Legend:

Y: Supported

N: Not supported

#

Only ZIP format files, compressed by using the DEFLATE compression algorithm, are supported.

The following shows the restrictions on input and output files used for the file compression operation.

Table 8-22 Restrictions on using the file compression operation

Item	Restriction
Input file name	Only the following alphanumeric characters and symbols can be used: Alphanumeric characters Alphabetic characters (a to z, A to Z) and numbers (0 to 9) can be used. Symbols The following symbols cannot be used: \, /, : If the file name contains a character that cannot be used, an error message (KDEC80022-E) is output and the file compression operation is canceled.
Output file name	The following symbols cannot be used: \, /, : If a file name contains a symbol that cannot be used, an error message (KDEC80022-E) is output and the file compression operation is canceled.
Output file entry name	The same restrictions as for the input file name apply.
Number of input files	You can specify from 1 to 999 input files. If this condition is not met, operation is not guaranteed. Multiple input files in a single input source folder can be compressed. However, multiple input source folders cannot be specified.
Input file size	The maximum input file size is 4 GB. If the file size exceeds the maximum, an error message (KDEC80105-E) is output and the file compression operation is canceled.
Output file size	The maximum output file size is 4 GB. If the file size exceeds the maximum, an error message (KDEC80106-E) is output and the file compression operation is canceled.