Field loss and delivery rules

1. The field in the self-service dataset is missing and an error is reported

1.1 Problem

Sometimes when a user is making a self-service dataset, an error "field missing" appears, as shown in the following figure:

1.2 Cause analysis

If the system cannot find the field, it will report an error and loss. As shown in the figure below, the "goodsale" field may have been deleted in the previous steps.

1.3 Solutions

Add the missing field before the error reporting step. You can add a column of "goodsale" before the penultimate step to solve the error reporting.

2. Field name transfer rules

The name will only be passed down, not up. Modifying the field name will only affect the current step and subsequent historical steps.

Changing "PAID" to "price" in the field setting of the second step will only affect the name of the following steps. The field name selected in the first step is still "product name".

Rename the field setting in step 2, "price" is inconsistent with the source field "PAID". Therefore, how the name of the source field "PAID" changes will not affect the transfer to the second step.