# Why are mandate mappings critical in an ELR integration?

Source: https://developer.avalara.com/products/e-invoicing/integration-guides/elr/hft0572984961153/

Guide: E-Invoicing and Live Reporting

# Why are mandate mappings critical in an ELR integration?

Mandate mappings define how data fields from a company’s ERP or application align with the destination fields (UBL) required by each country mandate.

These mappings ensure that documents comply with local tax authority requirements. Proper mapping supports legal compliance, reduces implementation time, and enables a consistent user experience across jurisdictions.

**Parent topic:** [Q-and-A for ELR](/elr/lbp6527542929684/)