What does Windows error code 15157 (ERROR_PRI_MERGE_RESOURCE_PACKAGE_REQUIRED) mean?

ERROR_PRI_MERGE_RESOURCE_PACKAGE_REQUIRED

Packages for a PRI file merge must include at least one resource package.

ERROR_PRI_MERGE_RESOURCE_PACKAGE_REQUIRED is Win32 error 15157 (0x00003B35) in Package Resource Index (PRI) merge processing.

Likely impact: Creating an empty synthetic resource package merely to satisfy the command would add useless deployment complexity.

Typical causes

• artifact discovery found only the main PRI.
• resource packages were not built.
• filters excluded all language or scale packages.
• the wrong command is used when no merge is necessary.

Troubleshooting steps

1. Verify that the operation includes at least one compatible resource package when using the merge workflow.
2. Collect main package identity and resource package inventory.
3. Correlate build configuration and target languages with MakePri command line, input PRI inventory, package identities, schemas, file hashes, output path, tool version, and the first detailed merge diagnostic.

Useful evidence

• Collect artifact filter logs.
• Collect MakePri command mode.

Recovery and retry

Build and include the intended resource package, or skip the merge operation when only the main PRI is required.

Related errors

ERROR_PRI_MERGE_MAIN_PACKAGE_REQUIRED is the inverse missing-role condition

Example

A single-language build invokes the resource-package merge step even though it produced only the main PRI. The pipeline skips merge for that configuration.

References

• Microsoft: exact Win32 system error range
• Microsoft: MakePri.exe command options
• Microsoft: Package Resource Index files