next_post_link and previous_post_link in custom post type single page, in same non-custom category

First please check your “custom_post_type” function that you Register Custom Post Type is everything correct like 'taxonomies'=> array( 'category') & 'has_archive' => true, ! If so then you must be put wrong way to display it.

About next_post_link and previous_post_link Please try with like this inside your single-realisation.php file

$prev_post = get_previous_post(); $next_post = get_next_post();    
 if(!empty($prev_post)):
        echo '<a href="'.get_the_permalink($prev_post->ID).'">'.__('Previous','text-domain').'</a>';
  endif;

if(!empty($next_post)):
     echo '<a href="'.get_the_permalink($next_post->ID).'" >'.__('Next','text-domain').'</a>';
endif;

I believe you will get your next & Previous post link form your custom post type also;

Thanks
Msua

Related Posts:

  1. Can the Next/Prev Post links be ordered by menu order or by a meta key?
  2. Filter next_post_link() and previous_post_link() by meta_key?
  3. How can I get next/ previous post links to order by a filter (by the last word of the title)?
  4. How can I get next post id after current post id for custom post type
  5. Problem excluding category from get_next_post
  6. specify meta_key / meta_value condition for prev_post_link and next_post_link
  7. Using previous_post_link and next_post_link to wrap around post sequence
  8. Working with Next and Prev links in Single Taxonomy Templates
  9. Next and Previous Posts of Same Parent
  10. Modify previous and next post links to current Authors Other posts
  11. Why are previous_post_link/next_post_link skipping some posts?
  12. Add Previous/Next Buttons to CPT Single Pages Only
  13. Custom Posts and Posts – next_post_link and previous_post_link not working together
  14. Display next 3 posts based on custom taxonomy
  15. Include “Scheduled” (“Future”) Posts in WordPress Post Navigation ( previous_post_link, next_post_link ) for a Specific Custom Post Type
  16. How to get next post link of child custom post type from parent post and get next post link of parent post from the last child post?
  17. Prev/Next Navigation on Single Post Disappeared for Custom Post Type
  18. Back, Next, and Previous links for the REFERRING term archive
  19. get_previous_post_link and get_next_post_link of custom post type that share custom field value
  20. Previous/Next custom post links within custom taxonomy
  21. Next/Previous Post Links in single-[custom-post-type].php file
  22. show previous/next post orderer by title in custom post types
  23. previous_posts_link returns null when querying custom post type
  24. Set a checkmark in a category based on a URL-parameter
  25. WP Query with categories only shows one post and ignores the category
  26. Adding custom post type to count in category
  27. How to edit this code to get the categories in achieve page?
  28. Category with post type pagination returns 404
  29. Custom Post Type and Category Base Rewrite Issue
  30. Get the category from custom post type
  31. Post injections into Site Origins Page builder [closed]
  32. Custom Post Type + Categories
  33. How to create a gallery page with categories?
  34. Previous/next post links displaying wrong category than is desired
  35. Custom Post Slug same as Parents Category Slug
  36. WordPress posts page for customer filtering and sorting along with category filter
  37. I am having Trouble to get list of Categories of Custom post Type
  38. Hierarchy and access control for Custom Post Types (CPT)
  39. Multiple (two) category postings on the same page.
  40. Loop filtering Custom Post Types and/or Categories
  41. School & class blogs: Categorize with categories or custom posts?
  42. Custom post type and category link together
  43. Why is my category template ignoring post type?
  44. Best method to make posts searchable, sortable and filterable – custom field, tag or category?
  45. How to get custom posts sub category link
  46. Not sure if I should create multiple custom post type [closed]
  47. Cross reference custom post types
  48. Make a custom_post translatable
  49. Pre-selecting the category for a custom post type
  50. browse by category and tags?
  51. I am trying to hide a custom post type category to logged in users with Pre_Get_Posts
  52. Categories filtering in new post
  53. Conditional statement for if archive page has posts which contain certain taxonomies/categories/tags, show those terms
  54. Custom post types and category archive
  55. List of Posts and Categories
  56. next/previous links on custom post single a little screwy
  57. How can I show 1 featured post in a styled element, and the next few below differently styled
  58. How do you create a custom template to display a category with an image and related posts below?
  59. How can I list Custom Post Types created with the Types plugin under categories?
  60. List Taxonomies: Don’t list taxonomy if it has no post – depending on custom post-meta?
  61. Custom Post Type Category Link
  62. Custom Post type category pages template and loop
  63. Custom templates for a specific category
  64. CPT category hierarchy
  65. Categorise Custom Post Types
  66. WP the_posts() on single-cars.php get category link
  67. Category.php template for custom posts
  68. How to retrieve category of a post in have_post loop?
  69. Categories and tags for custom post types
  70. Create new custom post and post category of same name
  71. Link to the next/prev posts in index loop in same category?
  72. Tag page only display 10 posts
  73. category page for custom post type
  74. in_category for custom post types
  75. Get parent category id from child category page for custom taxonomy
  76. Getting used tags per post type
  77. Archieve.php not loading for custom post type
  78. multiple custom post type on category page
  79. Category archive in with conjunction with custom post type is empty
  80. Can I restrict category availability?
  81. WP_Query Custom Post Type if Category ID Equals
  82. Why does accessing url by category cause issues with post types?
  83. Custom post types and ‘new WP_Query’
  84. How can I have different content for different countries?
  85. How to add current custom taxonomy slug to body class
  86. Assign category a default post type
  87. Meta data (Tags and Categories) for Custom Posts not showing.
  88. Navigate posts with different post type that are in the same categories
  89. Single.php Category Post Count
  90. List Posts By Custom Taxonomy
  91. get_category_link() for custom post type does not include custom slug rewrite?
  92. How to Display Posts From Category Within a Custom Taxonomy?
  93. Showing custom post type categories in the menu
  94. Disable custom taxonomy on admin bar
  95. How to use next_posts_link/previous_posts_link for custom post types paginate?
  96. Why does my taxonomy have a category style div id?
  97. Targeting categories in custom fields
  98. Creating Sections for Post Types
  99. Custom post types with categories in template
  100. Invalid Taxonomy
Hata!: SQLSTATE[HY000] [1045] Access denied for user 'divattrend_liink'@'localhost' (using password: YES)