# Enum SubprocessFinalizeParameterMergeStrategy

OptimaJet.Workflow.Core.Model.SubprocessFinalizeParameterMergeStrategy

Specifies how subprocess parameters whose purpose is not [ParameterPurpose.System](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ParameterPurpose/) are merged into the parent process when the subprocess is finalized.

Namespace: [OptimaJet.Workflow.Core.Model](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/)

```csharp
public enum SubprocessFinalizeParameterMergeStrategy
```

## Fields

`OverwriteAllNulls = 0` 

Merges subprocess parameters without replacing non-null parameter values in the parent process.

### Remarks

When [TransitionDefinition.MergeViaSetState](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/TransitionDefinition/) is [false](https://learn.microsoft.com/dotnet/csharp/language-reference/builtin-types/bool), a subprocess parameter is merged if the corresponding parent-process parameter is absent or has a [null](https://learn.microsoft.com/dotnet/csharp/language-reference/keywords/null) value. When it is [true](https://learn.microsoft.com/dotnet/csharp/language-reference/builtin-types/bool), only parameters absent from the parent process are supplied to the business-state-setting operation.

`OverwriteAll = 1` 

Merges all subprocess parameters, replacing corresponding parameter values in the parent process.

`OverwriteSpecified = 2` 

Merges only the subprocess parameters named by [TransitionDefinition.SubprocessSpecifiedParameters](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/TransitionDefinition/), replacing corresponding parameter values in the parent process.

`DontOverwriteSpecified = 3` 

Merges all subprocess parameters except those named by [TransitionDefinition.SubprocessSpecifiedParameters](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/TransitionDefinition/), replacing corresponding parameter values in the parent process.

[Previous SerializedParameter.PersistenceOperation](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/SerializedParameter.PersistenceOperation/) [Next SubprocessInOutDefinition](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/SubprocessInOutDefinition/)