3679649 - "ChangeSet index 1 - ???HCP upload error: Invalid form schema, form field name must begin with a letter (A-Z or a-z) or an underscore (_)???;File could not be uploaded to PFS" - Onboarding 2.0

Upon trying to upload a form to Maintain Onboarding and Offboarding Document Templates, encounter the following error message:

"ChangeSet index 1 - ???HCP upload error: Invalid form schema, form field name must begin with a letter (A-Z or a-z) or an underscore (_)???;File could not be uploaded to PFS"

SuccessFactors Onboarding 2.0

Maintain Onboarding and Offboarding Document Templates, form, document, upload error, error message, "ChangeSet index 1 - ???HCP upload error: Invalid form schema, form field name must begin with a letter (A-Z or a-z) or an underscore (_)???;File could not be uploaded to PFS", pfs, pfs error, document template, special character, fields, field, mapping, field mapping. , KBA , LOD-SF-OBX-DOC , Generation of Documents using PFS , Problem