User enters TenantCode, UserLoginName, Password

Validate input empty? format?

Show error missing/invalid

Find Tenant in DB

Tenant not found → Error

Find User in DB TenantId + UserLoginName

User not found → Error

Compare Password

Password incorrect → Error

Fill SDT UserLoginInfoSDT

Set UserLogin Info and store in session

Check Contract Status: TenantHasECContract OR TenantHasDailyReportContract OR TenantHasLedgerContract

No valid contract → Service not available

Redirect to Home

Invalid

Valid

Not found

Found

Not found

Found

Invalid

Valid