src/views/payment/payment-application-form.vue

@@ -1103,6 +1103,8 @@ export default {
       );
       this.$nextTick(() => {
         this.amountSyncing = false;
+        // 程序化赋值不触发校验，需手动重校验以清除/刷新残留错误
+        this.$refs.formRef?.validateField?.('appliedAmount').catch(() => {});
       });
     },
     'form.appliedAmount'(value) {
@@ -1132,6 +1134,7 @@ export default {
       );
       this.$nextTick(() => {
         this.amountSyncing = false;
+        this.$refs.formRef?.validateField?.('appliedAmount').catch(() => {});
       });
     },
   },