QB Issue Resolution:

The Purchase Order is a vendor Transaction. There is no Job-related Custom Field that carries to the PO. The Job data is the Lines in the details on the PO. Or, you want to use the Job shipping address for that PO. These are the only job-related parts that relate to the PO; the rest of the PO is Vendor related.

Resolution for Issue 'Custom Fields for jobs/customers not populating purchse orders?I simply want to add a Job number to purchase orders, asscociated with jobs not vendors.' available: Yes (Solved).
Source: Intuit Community forum.

Custom Fields for jobs/customers not populating purchse orders?I simply want to add a Job number to purchase orders, asscociated with jobs not vendors.: this issue or error code is a known issue in Quickbooks Online (QBO) and/or Quickbooks. Support for this issue is available either by self-service or paid support options. Experts are available to resolve your Quickbooks issue to ensure minimal downtime and continue running your business. First try to resolve the issue yourself by looking for a resolution described below. If it is a complex issue or you are unable to solve the issue, you may contact us by clicking here or by using other support options.

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