# Update the set of mainframe datasets and their attributes associated with a mainframe dataset ruleset in bulk

Endpoint: PUT /mainframe-dataset-rulesets/{mainframeDatasetRulesetId}/bulk-mainframe-dataset-update
Version: 5.1.47
Security: api_key

## Path parameters:

  - `mainframeDatasetRulesetId` (integer, required)
    The ID of the mainframe dataset ruleset to update the mainframe dataset for

## Request fields (application/json):

  - `mainframeDatasetMetadata` (array, required)
    Example: [{"fileName":"file.dat","rulesetId":1,"mainframeDatasetFormatId":2}]

  - `mainframeDatasetMetadata.fileName` (string, required)
    The name of the Mainframe Dataset metadata. This name must match the name of a file in the ruleset it is created on. This name must be unique for the given ruleset; in other words, the same file cannot be added to a ruleset more than once.
    Example: "file.dat"

  - `mainframeDatasetMetadata.rulesetId` (integer, required)
    The ID of the ruleset to create the Mainframe Dataset metadata on.
    Example: 1

  - `mainframeDatasetMetadata.mainframeDatasetFormatId` (integer)
    The ID of the Mainframe Dataset format corresponding to this Mainframe Dataset metadata. It is used to determine the fields for this file. This field is required.
    Example: 2

  - `mainframeDatasetMetadata.recordFormat` (string)
    The record format type for the mainframe data set. Note that this enum corresponds to the Variable Length checkbox in the UI.
    Enum: "FIXED_BLOCKED", "VARIABLE_BLOCKED"

  - `mainframeDatasetMetadata.nameIsRegularExpression` (boolean)
    Whether or not this file name represents a regular expression.

## Response 200 fields (application/json):

  - `asyncTaskId` (integer)
    The ID of the AsyncTask. This field will be generated by the Masking Engine.
    Example: 1

  - `operation` (string)
    The type of operation that the AsyncTask is performing.
    Enum: "ADD_MAPPINGS", "ALGORITHM_CREATE", "ALGORITHM_MIGRATE", "ALGORITHM_UPDATE", "DATAFILE_BULK_UPDATE", "ENCRYPTION_KEY_CREATE", "EXPORT", "EXPORT_CLASSIFIER_FILES", "EXPORT_MAPPINGS", "EXPORT_PROFILE_SET", "EXPORT_SL_VALUES", "GENERATE_EXECUTION_INVENTORY", "IMPORT", "RULESET_REFRESH", "TABLE_BULK_UPDATE", "MAINFRAME_DATASET_BULK_UPDATE", "SUPPORT_BUNDLE_GENERATE"

  - `reference` (string)
    The reference for the AsyncTask. An example of a reference is the ruleset ID for a RULESET_REFRESH operation.
    Example: 13

  - `status` (string)
    The status of the AsyncTask in regard to its completion.
    Enum: "CANCELLED", "FAILED", "RUNNING", "SUCCEEDED", "WAITING"

  - `startTime` (string)
    The date and time that this AsyncTask was started.

  - `endTime` (string)
    The date and time that this AsyncTask completed.

  - `cancellable` (boolean)
    True if the AsyncTask can be cancelled, false otherwise.

  - `exceptionDetail` (string)
    The details associated with the Java exception that caused this async task to fail, if applicable.


## Response 400 fields

## Response 403 fields

## Response 404 fields