Manda is the internal middleware layer that automates portal publishing. It converts Propertybase listings into portal-specific formats (XML, JSON, CSV), handles field mapping and validation, and delivers via API (real-time push), FTP (scheduled upload), or Pickup (portal-initiated download). Manda tracks all publication status in Portal Listing records (pba_PortalListing_c). The 7-step publishing workflow: (1) User publishes in Propertybase, (2) Data sent to Manda, (3) Rendering to portal format, (4) Output stored in feed store, (5) Status written to Portal Listing, (6) Delivery via configured method, (7) Delete/withdrawn handling. Common errors include missing required fields, unsupported picklist values, broken field mappings, and missing FTP credentials.