Java MIP SDK 1.17.154: commitAsync() TemplateNotFoundError (C# OK; Java fails Win & Ubuntu)

TL;DR

• Java SDK 1.17.154: calling setLabel() then commitAsync() fails with TemplateNotFoundError (TemplateId=2ea3c830-...).
• Same label/code works on Java 1.16.x and C# 1.17.154.
• Policy cache cleared, templates/labels verified, token/tenant checked—issue persists.

Environment

• SDK (Java): 1.16.x (OK), 1.17.154 (FAIL)
• SDK (C#): 1.17.154 (OK)
• OS (Java): Windows 10/11 (win32 build), Ubuntu 20.04 / 22.04 / 24.04
• Java: Corretto/OpenJDK 17.0.16 (x64)
• Service/Tenant: Microsoft Purview Information Protection
• Auth: (e.g., user delegated token / app-only token)

Code Snippet (Java)

// Label apply options
LabelingOptions labelingOptions = new LabelingOptions();
labelingOptions.setAssignmentMethod(AssignmentMethod.PRIVILEGED);
labelingOptions.setDowngradeJustified(true);
labelingOptions.setJustificationMessage("Label Apply");

// Get label
Label label = fileEngine.getLabelById(labelId);

// Apply label (no explicit template handling)
fileHandler.setLabel(label, labelingOptions, new ProtectionSettings());

// Commit
File workFile = new File(domainFolder, UidUtil.makeUid());
CompletableFuture<Boolean> commitFuture = fileHandler.commitAsync(workFile.getAbsolutePath());
commitFuture.get();  // <-- Throws TemplateNotFoundError on 1.17.154

Stack trace excerpt:

Caused by: com.microsoft.informationprotection.internal.gen.Error: TemplateNotFoundError:
Could not find template with id: 2ea3c830-5a0e-4eea-b48b-c72186d453c0, BadInputError.Code=General,
CorrelationId=42ffaad4-3a0f-4986-ba9d-b5a79c5fd076 (ProtectionEngine),
CorrelationId=16819f70-e419-473f-9895-c756f3dd5e4b (FileHandler)
    at com.microsoft.informationprotection.internal.gen.SdkWrapperJNI.SwigDirector_FileHandler_Observer_OnCommitFailure(SdkWrapperJNI.java:2688)

Expected Behavior

setLabel() should apply the label (and its protection) and commit successfully, as it does in Java 1.16 and C# 1.17.154.

Actual Behavior

commitAsync() fails with TemplateNotFoundError for the GUID referenced by the label’s ApplyProtectionAction.

What I’ve Tried

1. Policy/cache refresh: Deleted %LOCALAPPDATA%\Microsoft\MSIP\ / ~/.mip/, reloaded engine.
2. Template/label verification: Confirmed existence and publish scope in Purview portal & via PowerShell/Graph.
3. Label actions check: policyEngine.getLabelActions(labelId) shows an ApplyProtectionAction with that GUID.
4. Token/tenant sanity check: Correct scopes and same tenant.
5. Rollback test: Java 1.16 works; C# 1.17.154 works.

Questions

1. Any breaking change in Java 1.17 regarding how protection templates are resolved during setLabel()?
2. Is this a known issue specific to Java SDK 1.17.154 (win32 & Ubuntu 20/22/24 builds)?
3. Should we now explicitly use ProtectionDescriptor / SetProtection() in Java?
4. Can someone review the service logs using the CorrelationIds above?

Happy to provide additional logs, PowerShell/Graph queries, or action dumps if needed. Thanks!