I’m working with the Google Cloud Document AI API to process PDF files. I’m encountering the following error when trying to use the process_document method:

google.api_core.exceptions.FailedPrecondition: 400 Precondition check failed.

I made sure that the PDF is not corrupted and the size is correct, I tried to make a retry for this but still the same Exception.

    # Read the file into memory
    with open(pdf_file_path, "rb") as image:
        image_content = image.read()

    # Load binary data
    raw_document = documentai.RawDocument(
        content=image_content,
        mime_type="application/pdf",
    )

    # Configure the process request
    request = documentai.ProcessRequest(name=processor_name, raw_document=raw_document)

    result = client.process_document(request=request)
    document = result.document
    return document.text

Full Error:

File "/workspace/main.py", line 185, in docAI_ocr
    result = client.process_document(request=request)
  File "/layers/google.python.pip/pip/lib/python3.9/site-packages/google/cloud/documentai_v1/services/document_processor_service/client.py", line 914, in process_document
    response = rpc(
  File "/layers/google.python.pip/pip/lib/python3.9/site-packages/google/api_core/gapic_v1/method.py", line 131, in __call__
    return wrapped_func(*args, **kwargs)
  File "/layers/google.python.pip/pip/lib/python3.9/site-packages/google/api_core/retry/retry_unary.py", line 293, in retry_wrapped_func
    return retry_target(
  File "/layers/google.python.pip/pip/lib/python3.9/site-packages/google/api_core/retry/retry_unary.py", line 153, in retry_target
    _retry_error_helper(
  File "/layers/google.python.pip/pip/lib/python3.9/site-packages/google/api_core/retry/retry_base.py", line 212, in _retry_error_helper
    raise final_exc from source_exc
  File "/layers/google.python.pip/pip/lib/python3.9/site-packages/google/api_core/retry/retry_unary.py", line 144, in retry_target
    result = target()
  File "/layers/google.python.pip/pip/lib/python3.9/site-packages/google/api_core/timeout.py", line 120, in func_with_timeout
    return func(*args, **kwargs)
  File "/layers/google.python.pip/pip/lib/python3.9/site-packages/google/api_core/grpc_helpers.py", line 78, in error_remapped_callable
    raise exceptions.from_grpc_error(exc) from exc
google.api_core.exceptions.FailedPrecondition: 400 Precondition check failed.

Does anyone know how to solve this?