Keep the context with the data.

Identify what one row represents and which event creates it. A customer, an account and a service request are different units, even when a report loosely calls them all “records”. Document identifiers, allowed states and the meaning of dates. Note whether an empty field means unknown, not applicable or information that has not yet arrived. These distinctions affect sorting, reporting and later imports. A small data dictionary using actual examples can prevent a team from making confident comparisons between columns that describe different things.

Open a representative export outside the source application. Check whether identifiers retain leading zeroes, dates are unambiguous and text remains readable. Find out how related records and attachments are connected, and whether a correction made later can be identified. Include enough documentation for a recipient to understand the file without exposing unnecessary personal information. An export button alone does not demonstrate that the exported material can support a migration, reconcile a report or recreate the relationships important to the business.

When someone finds an error, they need to know where to report it and which system should be corrected first. Avoid fixing a downstream spreadsheet while leaving the authoritative source unchanged. Record the nature of an important correction and who reviewed it, using access appropriate to the data. This bulletin connects definitions, exports and stewardship through practical cases. Clear ownership makes it easier to resolve disagreements about a value and prevents a useful dataset from becoming a collection of files whose meaning depends on one person’s memory.