
    Develop a validation function for the bank's loan management system that checks if customer financial identifiers follow the required format of lowercase descriptors connected by underscores. The function should return true for valid identifier formats like "credit_score_high" or "payment_history_good", and false for any non-compliant formats.
    

    
import re

def text_lowercase_underscore(text):
    """
    Develop a validation function for the bank's loan management system that checks if customer financial identifiers follow the required format of lowercase descriptors connected by underscores. The function should return true for valid identifier formats like "credit_score_high" or "payment_history_good", and false for any non-compliant formats.
    

    """
import re

def text_lowercase_underscore(text):
    """
    Develop a validation function for the bank's loan management system that checks if customer financial identifiers follow the required format of lowercase descriptors connected by underscores. The function should return true for valid identifier formats like "credit_score_high" or "payment_history_good", and false for any non-compliant formats.
    

    """
    patterns = '^[a-z]+_[a-z]+$'
    if re.search(patterns, text):
        return True
    else:
        return False