Discrepancy categories
Understand why transactions are missing between AvaTax and your ERP system and how to identify and resolve the gaps.
Missing transactions occur when a transaction exists in 1 system but not in the other. Reconciliation identifies these gaps and categorizes them based on where the transaction is absent.
Missing from AvaTax
A transaction exists in the ERP system but doesn’t appear in AvaTax.
Common root causes
-
API error during synchronization
-
Transaction not yet invoiced
-
Address validation failure
-
Connector disabled or paused
Table 1. Detection and resolution
Root cause
Detection method
Resolution path
API error during sync
Review the audit trail for failed API calls, including error codes 300, 303, 304, or 309
Correct the data issue in the ERP system, then resync or manually create the transaction
Transaction not yet invoiced
ERP transaction is in order or quote status
No action is required. Transaction will sync when invoiced
Address validation failure
Audit logs show error 309 (InvalidAddress) or 317 (InvalidPostalCode)
Correct the address in the ERP system and recalculate the tax
Connector disabled or paused
Gap in transaction dates correlates with connector downtime
Perform bulk synchronization for the affected period
Missing from ERP
A transaction exists in AvaTax but doesn’t appear in the ERP system.
Common root causes
-
Manual entry in AvaTax
-
Different source system
-
Test transaction
Table 2. Detection and resolution
Root cause
Detection method
Resolution path
Manual entry in AvaTax
Transaction has no matching ERP reference
Verify legitimacy. Create ERP entry or void the transaction in AvaTax
Different source system
Document code pattern indicates webstore, POS, or other source
Search for the corresponding ERP transaction and document the relationship
Test transaction
Document code contains “test” or transaction exists in a sandbox company
Void if in production, or ignore if appropriate
Part of the AI-assisted tax reconciliation AI use case. Open the full “Discrepancy categories” section on Avalara.

