## ALP Programming Guide and Reference

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### ALP1603: Input and object output filenames are identical

The assembler has detected an attempt to create an output file with a name identical to that of an input file; the operation was not allowed. The assembler only detects this condition when the names are an identical match , using a case-sensitive comparison algorithm.

Recovery: Ensure that the correct command line options have been used. Internal variables may have been incorrectly initialized using options that affect automatic file name generation, thus causing a filename collision.

Related Information:

Internal Variables
File Control Options