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“Merchant doesn’t buy my items”

Check:
  1. Config.bBuysAnything or Config.bHasBuyList is enabled
  2. If using buy list, item is in BuyList array
  3. Proximity check passes
  4. Item is valid (not null)

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“Prices keep changing”

Cause: Stale quote detection is working correctly. Solution: Get fresh quote right before confirming transaction.

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”Stock doesn’t replenish on sell”

Check:
  1. Config.bHasStock = true (replenishment only works in finite mode)
  2. Config.bReplenishOnBuyback = true OR
  3. StockItem.ReplenishMode = AlwaysReplenish
  4. Item exists in StockItems array

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”Merchant state not saving”

Check:
  1. Merchant is registered with USaveSubsystem (automatic in BeginPlay)
  2. USaveSubsystem::FlushSaves() is called (or auto-save is enabled)
  3. Save directory is writable

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”Players can’t interact with merchant”

Check:
  1. Config.MaxInteractionDistance is sufficient
  2. Player pawn location is valid
  3. Merchant owner actor location is valid