Lead Conversion Mapping - Matching Field Length Error

Lead Conversion Mapping - Matching Field Length Error

I'm trying to map new fields in Leads to Potentials and Contacts. I'm getting an error message that says, "Parent field No of Employees of length 9 should be less than or equal to Potential's field No. Employees of length 5." 


When I go into Potentials to edit the field, I'm unable to change the value. I see the following:





When I go into Leads to edit the field, I'm unable to change the values. It is saying it is a system defined value. It is also set to 1, even though we can edit many digits. For example I can enter, 40,000 in the field.  I see the following:



I'm unable to change any of the values?  If I can't change the values, I can't map ANY fields.
Assumption = The error message says "Parent field".  Is it correct to assume Parent field is Leads?

Any suggestions on how to solve this?

            Zoho Pagesense Resources

              Zoho SalesIQ Resources



                    Zoho TeamInbox Resources

                      Zoho DataPrep Resources



                        Zoho CRM Plus Resources

                          Zoho Books Resources


                            Zoho Subscriptions Resources

                              Zoho Desk Resources

                                Zoho Projects Resources


                                  Zoho Sprints Resources


                                    Qntrl Resources


                                      Zoho Creator Resources


                                        Zoho WorkDrive Resources




                                            Zoho Campaigns Resources

                                              Zoho CRM Resources

                                                      Design. Discuss. Deliver.

                                                      Create visually engaging stories with Zoho Show.

                                                      Get Started Now


                                                        Zoho Show Resources