URL Syntax Issues
Critical URL structure problems that break UTM tracking entirely. These issues prevent parameters from being captured at all.
CriticalCritical Issues
Duplicate UTM Parameters in URL - UTM Validation Rule
Detects when the same UTM parameter appears multiple times in a URL, causing unpredictable and inconsistent tracking
Fragment Before Query - UTM Validation Rule
Detects when # appears before ? in URLs, causing 100% UTM tracking failure in GA4
Missing Query Separator Before UTM Parameters - UTM Validation Rule
Detects when URLs contain utm_ parameters but are missing the required ? separator, causing 100% tracking failure
Multiple Question Marks in URL - UTM Validation Rule
Detects when URLs contain multiple ? characters, corrupting query parameter parsing and UTM tracking
Unencoded Ampersand in UTM Parameter - UTM Validation Rule
Detects when & character appears inside UTM parameter values, breaking URL parsing and creating malformed tracking
Unencoded Spaces in URL - UTM Validation Rule
Detects unencoded spaces in URLs that break tracking when shared via email, messaging apps, or social media
URL Length Exceeds GA4 Limit - UTM Validation Rule
Detects when URLs exceed 420 characters, causing GA4 to truncate tracking parameters
UTM Parameters in URL Path - UTM Validation Rule
Detects when UTM parameters are embedded in the URL path instead of the query string, causing 100% tracking failure
WarningWarnings
Double URL Encoding Detected - UTM Validation Rule
Detects when URLs are encoded multiple times, causing GA4 to show encoded characters instead of readable values
Malformed Percent Encoding in UTM Parameter - UTM Validation Rule
Detects invalid percent encoding patterns where % is not followed by two hex digits, breaking URL parsing
Plus Sign in UTM Parameter - UTM Validation Rule
Detects when + characters in UTM values may be interpreted as spaces, causing inconsistent tracking across platforms
Spaces in UTM Parameters - UTM Validation Rule
Detects spaces in UTM parameters that cause data fragmentation and reporting inconsistencies even when properly encoded
Special Characters in UTM Parameters - UTM Validation Rule
Detects URL delimiter characters (&, =, ?, #) in UTM values that break URL parsing and cause tracking errors