Programming Tutorials

  Rejections during the final stage of release are costly. You build your Android App Bundle (AAB) or APK, initiate the AppGallery Connect upload, and immediately hit an "Invalid App Signature" rejection. This blocks Huawei AppGallery publishing pipelines and disrupts deployment schedules. The error indicates a cryptographic mismatch between your build artifact and AppGallery Connect's (AGC) expected signature schemes or upload certificates. Resolving this requires aligning your build system's signing configuration with Huawei's backend validation rules. The Root Cause: Signature Schemes and Key Custody Android application signing relies on a strict cryptographic hierarchy. When an AGC signature error occurs, it stems from one of two architectural misconfigurations in your release pipeline. First, the artifact may lack Android APK Signature Scheme v2 or v3. AppGallery Connect strictly enforces v2/v3 signing to prevent malicious tampering. Relying solely on the leg...

  Uploading a release candidate to Huawei AppGallery Connect, only to be met with an immediate rejection, is a strict bottleneck for release pipelines. When AppGallery Connect throws   HarmonyOS Error Code 991 , the deployment halts. The system is explicitly stating that the   .app   or   .hap   package contains a broken, invalid, or missing digital signature. For Release Managers and DevOps engineers automating  HarmonyOS app publishing , this error typically surfaces during automated CI/CD runs. It rarely occurs during local debugging. Understanding the strict packaging constraints of HarmonyOS NEXT is critical to resolving this deployment blocker permanently. Anatomy of a HarmonyOS Signature Failure Before implementing the fix, it is necessary to understand how HarmonyOS NEXT validates packages. A HarmonyOS application package ( .app ) is an archive containing one or more Harmony Ability Packages ( .hap ) and Harmony Shared Packages ( .hsp ). When y...