How to Fix Decimal Value Errors in Acrobat Preflight Custom Checks
Question details
The user needs to fix an Acrobat Preflight error where inputting a minimum distance value with a comma separator prevents further editing and triggers an unknown unit error.
- Product
- Adobe Acrobat
- Device & OS
- not provided
- Scenario
- Configuring minimum distance values in Adobe Acrobat Preflight custom checks.
- Observed behavior
- The Preflight editor reports an unknown unit error involving ',9' and locks the user out of editing the custom check after entering a comma as a decimal separator.
Ensure you take note of your exact custom check parameters before attempting to fix the issue, as you may need to recreate the profile from scratch if it has become corrupted.
Use a Period as the Decimal Separator
Resolves the unknown unit error caused by Adobe Acrobat misinterpreting regional comma usage as a unit separator.
Depending on your operating system's regional settings, Adobe Acrobat may fail to recognize a comma as a valid decimal separator in the Preflight tool. Changing the comma to a period will ensure the software parses the numerical distance correctly.
Launch Adobe Acrobat and navigate to the Print Production tools. Select Preflight and locate the specific custom check you are trying to edit.
Find the minimum distance value field. Instead of typing a comma (e.g., '9,9'), enter the value using a period, such as '9.9 mm'.
Apply the changes and save the custom check. Run a quick test to confirm the unknown unit error has disappeared.
Recreate the Corrupted Custom Check
Fixes profiles that become completely uneditable or permanently locked after the initial error occurs.
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Frequently Asked Questions
Why does Adobe Acrobat report an unknown unit error for my decimal?
Acrobat's Preflight editor may not recognize the comma as a valid decimal separator, depending on your app version and regional settings. Instead, it misinterprets the comma as part of a unit name or separator, triggering the error.
Can I recover a custom check that is impossible to edit?
If the interface completely locks you out after entering an invalid separator, the profile is likely corrupted. You will need to delete the locked profile and recreate the custom check using the period separator.
Does updating Acrobat fix the decimal separator bug?
Adobe frequently patches regional formatting bugs and interface lockups. Updating to the latest version via Help > Check for Updates can sometimes resolve underlying comma-separator conflicts in the Preflight tool.
