Error when modeling database

[rubenbisneto]

Hello.

I’m getting an error message while trying to runserver. This is the erro:

django.core.management.base.SystemCheckError: SystemCheckError: System check identified some issues:

ERRORS:
gcee.CreditosDeEnergia.periodo_de_geracao_do_credito: (fields.E304) Reverse accessor for ‘CreditosDeEnergia.periodo_de_geracao_do_credito’ clashes with reverse accessor for ‘CreditosDeEnergia.periodo_de_utilizacao_do_credito’.
HINT: Add or change a related_name argument to the definition for ‘CreditosDeEnergia.periodo_de_geracao_do_credito’ or ‘CreditosDeEnergia.periodo_de_utilizacao_do_credito’.
gcee.CreditosDeEnergia.periodo_de_geracao_do_credito: (fields.E304) Reverse accessor for ‘CreditosDeEnergia.periodo_de_geracao_do_credito’ clashes with reverse accessor for ‘CreditosDeEnergia.periodo_que_expira_credito’.
HINT: Add or change a related_name argument to the definition for ‘CreditosDeEnergia.periodo_de_geracao_do_credito’ or ‘CreditosDeEnergia.periodo_que_expira_credito’.
gcee.CreditosDeEnergia.periodo_de_utilizacao_do_credito: (fields.E304) Reverse accessor for ‘CreditosDeEnergia.periodo_de_utilizacao_do_credito’ clashes with reverse accessor for ‘CreditosDeEnergia.periodo_de_geracao_do_credito’.
HINT: Add or change a related_name argument to the definition for ‘CreditosDeEnergia.periodo_de_utilizacao_do_credito’ or ‘CreditosDeEnergia.periodo_de_geracao_do_credito’.
gcee.CreditosDeEnergia.periodo_de_utilizacao_do_credito: (fields.E304) Reverse accessor for ‘CreditosDeEnergia.periodo_de_utilizacao_do_credito’ clashes with reverse accessor for ‘CreditosDeEnergia.periodo_que_expira_credito’.
HINT: Add or change a related_name argument to the definition for ‘CreditosDeEnergia.periodo_de_utilizacao_do_credito’ or ‘CreditosDeEnergia.periodo_que_expira_credito’.
gcee.CreditosDeEnergia.periodo_que_expira_credito: (fields.E304) Reverse accessor for ‘CreditosDeEnergia.periodo_que_expira_credito’ clashes with reverse accessor for ‘CreditosDeEnergia.periodo_de_geracao_do_credito’.
HINT: Add or change a related_name argument to the definition for ‘CreditosDeEnergia.periodo_que_expira_credito’ or ‘CreditosDeEnergia.periodo_de_geracao_do_credito’.
gcee.CreditosDeEnergia.periodo_que_expira_credito: (fields.E304) Reverse accessor for ‘CreditosDeEnergia.periodo_que_expira_credito’ clashes with reverse accessor for ‘CreditosDeEnergia.periodo_de_utilizacao_do_credito’.
HINT: Add or change a related_name argument to the definition for ‘CreditosDeEnergia.periodo_que_expira_credito’ or ‘CreditosDeEnergia.periodo_de_utilizacao_do_credito’.

System check identified 6 issues (0 silenced).

I created my sqlite db using sqlitestudio and my table named as “Creditos_de_energia” is desingned as you can see at thepicture bellow:

Those 3 fields (2, 3and 12) are foreinkey to the “Periodos” table.

Can I use inside the a table 3 foreingkey fields pointing to another same table?

What is that did wrong?

[KenWhitesell]

Thank you for posting the error messages, it’s helpful when trying to diagnose problems. However, in the future, also please post the important code - it makes it easier to talk about and address specific issues.

The information you’re looking for can be found at:

• Foreign Key fields
• Related fields
  and
• Following links backward