exchange-2.0/app/Models/StatementTransactionsDetail.php

<?php

namespace App\Models;

use Illuminate\Database\Eloquent\Factories\HasFactory;
use Illuminate\Database\Eloquent\Model;

class StatementTransactionsDetail extends Model
{
    use HasFactory;

    protected $fillable = [
        'date',
        'statement_transactions_id',
        // 'description',
        // 'credit',
        // 'debit',
        'pay_for',
        'system_references',
        // 'remark_references',
        // 'is_multiple',
        // 'is_matches',
        'system_amounts',
    ];

    public function statementTransaction()
    {
        return $this->belongsTo(StatementTransaction::class, 'statement_transactions_id', 'id');
    }
}