1 files changed, 6 insertions, 0 deletions
diff --git a/packages/taler-util/src/wallet-types.ts b/packages/taler-util/src/wallet-types.ts
index a761c5cff..11162df14 100644
--- a/packages/taler-util/src/wallet-types.ts
+++ b/packages/taler-util/src/wallet-types.ts
@@ -2263,6 +2263,12 @@ export interface PayPeerInsufficientBalanceDetails {
    */
   balanceMaterial: AmountString;
 
+  /**
+   * If non-zero, the largest fee gap estimate of an exchange
+   * where we would otherwise have enough balance available.
+   */
+  feeGapEstimate: AmountString;
+
   perExchange: {
     [url: string]: {
       balanceAvailable: AmountString;