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| source | description |
|---|---|
| IPM | the source value is taken from a field in the request IPM. The maximum length of the value must also be specified. |
| constant | the source value is taken from the constant value specified in the mapping |
| API parameter | the source value is taken from a command line parameter supplied to the LightWave CLIENT process. The maximum length of the value must also be specifiedSee Working with API Parameters. |
| FILE | the source content is taken from a file, the name of which is supplied by the client application in the request IPM |
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