Diagnosis
The selection for source field &V1& cannot be determined. The selectionis required for one of the following reasons:

• The following applies if this is a warning message.

Source field &V1& is status-relevant - such as the consolidation unit,document type, version, or one of the higher-level fields. Selections onthese types of fields reduces the volume of the source data being read.This can dramatically increase system performance during task execution.For other types of fields, the system needs to read much more,unnecessary source data, most of which is disregarded during processing.

• The following applies if this is an error message.

A selection for source field &V1& is needed to determine the contextwhenever the mapping settings or the source selection of the methodcontain a source selection for hierarchies or attributes. See also errormessage UCT8 007, which is also displayed with this error message.
The selection for source field &V1& is derived from the target selectionand the mapping rule. In this case, one of two problems apply: (a) thesource selection cannot be derived from the mapping rule that containsV1 as the source field; or (b) there is no mapping rule that containssource field &V1&.

System Response
If this message is issued as a warning, you can save thesettings. However, you might encounter performance problems duringexecution.
If this message is issued as an error, you cannot save thesettings and the system displays the details of the source selection forhierarchies or attributes incorrectly. The method cannot be executed atruntime.

Procedure
Check if a mapping rule exists that contains &V1& as a source field. Ifno such mapping rule exists, define one. Otherwise, check any othermessages that may have been issued and modify the mapping ruleaccordingly.