A .csv file containing a list of customer IDs and optionally custom context fields.
Requirements:

• The CSV must include a column with the header customerId, which contains the customer IDs you want to target.
• You may include a column concurrencyExecutionId if the journey supports concurrency. If not provided, the system will generate a random for each customer.
• You may include any other columns, which will be interpreted as dynamic context fields (contextKeys) with their corresponding values.

Example customer list:

  customerId,offerBank,subscriptionLevel
  be5d3f02f48647e2bd985128e1c4b065,300.00,premium
  be5d78f2f48647e2bd985128e1c4b066,256.00,basic
  be5d3f02a34547e2bd981234wqe34241,220.00,standard

  customerId,concurrencyExecutionId,offerBank
  be5d3f02a34547e2bd981234wqe34241,xyz789,220.00
  be5d3f02f48647e2bd985128e1c4b065,,300.00

Notes:

• The order of columns does not matter, except that customerId is required.
• Any column besides customerId and concurrencyExecutionId is treated as a dynamic context field.