wp_insert_term doesn’t work with custom post type’s tax

The problem is higher in your code. 

$cat    = get_cat_ID($developer);

will return false for a custom taxonomy, as it only checks the standard categories.

Use get_term_by instead.

Related Posts:

  1. How to only list the child terms of a taxonomy and not their parents?
  2. How to use taxonomies on attachments with the new Media Library?
  3. Hierarchical taxonomy UI
  4. How to display custom taxonomies in posts?
  5. Filtering custom taxonomies
  6. Allowing specific users to only add posts using certain custom taxomy terms
  7. Edit tags page for hierarchical taxonomy doesn’t show taxonomies at all depths
  8. I want to load post content by categories using Ajax
  9. Hook to process a new taxonomy tag before it is created?
  10. Removing taxonomy base using WP rewrite
  11. get_terms() returns an empty array
  12. Scheduling posts to update once per day with wp_cron
  13. How to find taxonomy name using only taxonomy TERM ID (or taxonomy term name)
  14. Multiple users – only allow them to manage their own terms for custom taxonomy when logged in
  15. WP_insert_term how to insert multiple values as taxonomny term?
  16. How to include parent terms in hierarchical taxonomy URLs?
  17. Permalinks for quote authors
  18. How do I display a tag cloud with both post tags AND a custom taxonomy?
  19. Custom taxonomy term as class?
  20. How to edit/remove a term that’s in multiple taxonomies?
  21. Using a loop to display terms associated with a post
  22. Custom Taxonomy: Parent still counting deleted Child
  23. Improving WP_Query performance for multiple taxonomies
  24. Create Child Taxonomies
  25. how to create a proper query for getting a list of users with taxonomy related meta key
  26. Taxonomy page template changing when using query variables
  27. Get direct children of custom taxonomy
  28. How to add autocomplete to custom taxonomy for CPT
  29. List subcategory on taxonomy term page
  30. Operations with custom fields values in a loop
  31. How to get custom post type taxonomy
  32. Using wp_list_categories to show more than one custom taxonomy
  33. Show all posts without a custom taxonomy
  34. remove sanitize_title() for register_taxonomy()
  35. How do I taxonomy terms based on terms they are used alongside?
  36. Can I use a Custom Meta Value inside of ‘get_the_terms’?
  37. How can I populate a select element with terms from a custom taxonomy and filter post results?
  38. How do I list the pages of a custom taxonomy?
  39. has_term if/echo else/echo function
  40. Why does a new taxonomy term get created when I assign an existing term to a post?
  41. Add Image Uploader In Admin Panel
  42. Tell the difference between a term and page when they have the same ID
  43. add hirarchy of categories in products grid of visual composer
  44. How do I create a permalink structure with 2 taxonomies
  45. How to use multiple archive templates for a taxonomy?
  46. Hiding taxonomies with no children WP_Query & tax_query
  47. Custom taxonomy for Media Library
  48. Clicking Add New button for custom taxonomy only moves element
  49. How do I return all terms from multiple taxonomies?
  50. Returning One custom taxonomy term name
  51. get_term_link not working
  52. Restrict editing of posts with specific taxonomy to users with a matching meta value?
  53. Hide terms if they aren’t the same as the current term
  54. Corrupted nav-menu?
  55. Hide taxonomy when term is empty
  56. The best way to display taxonomies
  57. Dynamically set taxonomy term and show admin notice on post save
  58. Remove taxonomy widget from “PAGE” post
  59. Custom rewrite permalink doesn’t work
  60. Can you hide empty terms using get_term_children?
  61. Register `product_cat` taxonomy for default post post type
  62. Don’t display taxonomy if empty
  63. how to access the $query variable inside taxonomy-xxx.php template file?
  64. List terms of custom taxonomy if matches other taxonomy
  65. Order custom taxonomy by date
  66. Permalink issues with custom taxonomies
  67. Insert taxonomy slug into loop class
  68. wp_set_post_terms example?
  69. Change the full permalink (URL) of a single post by connecting it to a specific page
  70. Where to find relation of custom post type category with it thubmnail image in wordpress database
  71. Adding term to a custom taxonomy based on term from product category
  72. Add taxonomy column with meta field (ACF) content
  73. Warning: Undefined variable $post in C:\xampp\htdocs\… after PHP upgrade
  74. How to display taxonomy terms in a dropdown on a user edit page
  75. Custom Taxonomy archive.php template naming not working
  76. Remove custom taxonomy slug from URL
  77. Add A CSS Class To A Menu Item When A Custom Taxonomy Term is Present On Single Post
  78. How to appear plural or singular custom taxonomy name(-s) inside woocommerce single product meta php file
  79. Filter Tags for current users
  80. Add term to taxonomy programatically
  81. How to filter a page title with custom taxonomies
  82. Hierarchical taxonomies in permalink cause 404 for sub term archive
  83. How can I rewrite a custom taxonomy archive slug
  84. Custom TaxonomyTemplate
  85. Output slugs to use as class names for every taxonomy a post is attached to
  86. WordPress custom taxonomies new/edit post autocomplete
  87. Templates files for custom post type with custom tags
  88. Permalink structure not working with Custom Taxonomy (URL like ./taxonomy/category/postname)
  89. taxonomy query on front page
  90. Pagination with custom query (not using posts)
  91. What’s the proper WordPress URL for the template of my custom taxonomy?
  92. WordPress show posts from children terms of a taxonomy term
  93. Get Posts with matching lowest taxonomies
  94. How to randomise a custom taxonomy tag cloud
  95. query posts returns 10 records
  96. Select Custom Taxonomy from Theme Options
  97. Remove Tag Cloud Words from Custom Taxonomy
  98. How to add/enqueue Custom CSS for a custom taxonomy page?
  99. Search and filter with custom field in taxonomy
  100. Custom taxonomy with custom meta value is not sorting correctly (query returns the same value for orderby regardless of sort column click)