What is the first action a business analyst should take to split a 'Full Invoice No' into relevant columns while disregarding the CostCenter Code?

Selecting the split marker is the first and essential action a business analyst needs to take to effectively split a 'Full Invoice No' into relevant columns. The split marker identifies the character or delimiter within the 'Full Invoice No' that separates different pieces of information. By pinpointing this marker, the analyst sets up the framework to divide the data correctly. For instance, if the invoices include various components separated by a specific character (like a hyphen or space), identifying this character first is crucial for successful data parsing.

In this scenario, subsequent actions, such as clicking "All instances," unchecking the first column, or renaming the fields, follow after determining the correct split marker. These actions depend on having already set the base for splitting the data accurately, which makes selecting the split marker the initial and most critical step in the process.