# CMAQ File Not Available Error

**URL:** <https://forum.cmascenter.org/t/cmaq-file-not-available-error/2303>\
**Category:** CMAQ\
**Created:** [April 30, 2021, 6:15pm UTC](https://forum.cmascenter.org/t/cmaq-file-not-available-error/2303 "2021-04-30T18:15:56Z")\
**Posts on this page:** 1\
**Showing post:** 4

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**Author:** ![hogrefe.christian](https://avatars.discourse-cdn.com/v4/letter/h/74df32/32.png) [@hogrefe.christian](https://forum.cmascenter.org/u/hogrefe.christian)\
**Post date:** [April 18, 2025, 11:27am UTC](https://forum.cmascenter.org/t/cmaq-file-not-available-error/2303/4 "2025-04-18T11:27:40Z")

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Hi @sher ,

as the error message says, file INIT\_CONC\_1 (/fs2/home/qiaozhi/software/cmaq/CMAQV5.3.3/data/icon/CCTM\_ICON\_v533\_2020case\_profile\_20200105) is not available when the program is executed. If you do `ls /fs2/home/qiaozhi/software/cmaq/CMAQV5.3.3/data/icon/CCTM_ICON_v533_2020case_profile_20200105`, do you see the file?

Looking back at your [other post on preparing the ICON file](https://forum.cmascenter.org/t/icon-error-error-reading-netcdf-file-attribute-ftype/5741), it seems you have a slight mismatch in filenames between what you generated with ICON and what you’re specifying in the CCTM run script. Specifically, in the log file you posted in that other thread, the file was named ‘/fs2/home/qiaozhi/software/cmaq/CMAQV5.3.3/data/icon/ICON\_v532\_2020case\_profile\_20200105’ (note the ‘v532’ as part of the filename) while the CCTM log file says the program is looking for ‘/fs2/home/qiaozhi/software/cmaq/CMAQV5.3.3/data/icon/CCTM\_ICON\_v533\_2020case\_profile\_20200105’ (note the ‘v533’ as part of the filename).

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