Updated on 2026-08-14

core/error/.gitignore

@@ -0,0 +1 @@
+/build

core/error/build.gradle.kts

@@ -0,0 +1,14 @@
+plugins {
+    alias(deps.plugins.android.library)
+    alias(deps.plugins.kotlin.android)
+    id("configuration")
+}
+
+android {
+    namespace = "com.tangem.core.error"
+}
+
+dependencies {
+    implementation(tangemDeps.card.core)
+    implementation(tangemDeps.blockchain)
+}

core/error/src/main/kotlin/com/tangem/core/error/UniversalError.kt

@@ -0,0 +1,23 @@
+package com.tangem.core.error
+
+/**
+ * Universal error interface for all errors in the app.
+ * Each error code must follow this format: xxxyyyzzz where
+ * xxx - Feature code
+ * yyy - Subsystem code
+ * zzz - Specific error code
+ * If you need to add new feature add it to list below incrementing last code.
+ *
+ * Features:
+ * `100` - App error
+ * `101` - TangemSdkError
+ * `102` - BlockchainSdkError
+ * `103` - Express
+ * `104` - Visa
+ * `105` - Staking
+ * `106` - NFT
+ * `107` - WalletConnect
+ */
+interface UniversalError {
+    val errorCode: Int
+}

core/error/src/main/kotlin/com/tangem/core/error/Utils.kt

@@ -0,0 +1,14 @@
+package com.tangem.core.error
+
+import com.tangem.common.core.TangemSdkError
+import com.tangem.blockchain.common.BlockchainSdkError
+
+val TangemSdkError.universalError: UniversalError
+    get() = object : UniversalError {
+        override val errorCode: Int = 101000000 + code
+    }
+
+val BlockchainSdkError.universalError: UniversalError
+    get() = object : UniversalError {
+        override val errorCode: Int = 102000000 + code
+    }