[BUG][13.0] deltatech_service_equipment: unable to add equipment

[ygol]

reproduce:

1. open service / equipment
2. click on "create" button
3. enter required field
   • "name" = equip_01
   • "type" = ty01 4 click "save" 5 getting error popup with:

Something went wrong !

service.equipment(4,).agreement_id