This error occurs due to a validation rule in Form 1275: Jobsheet No. and Incident cannot both be empty simultaneously. The system requires at least one of these fields to be filled to save the record.

Solution:

In Form 122, the Incident No. field is now enabled. To avoid the error, enter either a Jobsheet No. or an Incident No. before saving the form. This ensures the validation rule is satisfied and the record can be saved successfully.